ChatGPT answers, unedited

Yes. If your goal is finding keywords that are genuinely winnable, rather than just sorting by a third-party “KD” number, I’d use a combination of tools.

The key: don't trust KD alone

A keyword with KD 15 isn't necessarily easier than one with KD 25. Third-party difficulty scores are estimates, and different tools calculate them differently. Ahrefs itself recommends treating KD as an initial filter and then doing actual SERP analysis. Ahrefs Ahrefs

For a more realistic “can my site actually rank?” assessment, I'd examine:

• Weak sites in the top 10 — forums, small niche sites, low-authority blogs, thin affiliate pages, etc.
• Referring domains to individual ranking pages, not merely domain authority.
• Search intent match — are the current results actually satisfying the query?
• Content quality/gaps — can you substantially answer the query better?
• SERP composition — lots of giant brands, Reddit, YouTube, shopping results, featured snippets, etc. can change the opportunity.
• Topical authority — do you already have related content ranking?
• Your site's existing rankings — a page already sitting around positions 8–30 can be a much easier opportunity than a completely new keyword.

My preferred workflow

Ahrefs/Semrush → LowFruits → Google Search Console → manual SERP inspection

For example, I'd take 1,000–10,000 keyword candidates, filter for reasonable volume and relatively low KD, then look specifically for SERPs where several weak pages are already ranking. After that, I'd check GSC for queries your site is already getting impressions for. Those are often the highest-confidence opportunities because you have actual evidence that Google considers your site relevant. Google Help Google Help

If you tell me your niche + domain (if you have one) + target country, I can also give you a concrete keyword-research workflow with thresholds for volume, KD, referring domains, and SERP weakness rather than generic “KD < 20” advice.

For finding low-competition keywords and estimating true ranking difficulty, I’d avoid relying on a single “keyword difficulty” score. The best workflow combines:

1. Keyword discovery (finding opportunities)
2. SERP analysis (seeing who actually ranks)
3. Authority/backlink analysis (measuring what it takes to beat them)
4. Intent matching (checking whether Google is rewarding the type of page you can create)

Here are the tools I’d consider:

My preferred workflow for “true” ranking difficulty

1. Start with a keyword database

Use Ahrefs, Semrush, or KWFinder to generate hundreds/thousands of candidates.

Filter for things like:

• Search volume: not too low, not necessarily huge
• Keyword difficulty: low-to-medium
• Clear intent
• Long-tail modifiers:

• “for beginners”
• “vs”
• “alternative”
• “template”
• “calculator”
• “near me”
• “under $X”
• “how to”

Example:

Instead of targeting:

“project management software”

look for:

“project management software for construction freelancers”

The second term usually has fewer competitors and clearer intent.

2. Manually inspect the SERP (this is where most tools fail)

A keyword with “KD 20” can still be difficult if the results are dominated by huge brands.

Look at the top 10 results:

Good signs:

• Forums ranking
• Small blogs ranking
• Pages with few backlinks
• Outdated content
• Poor search intent match
• Thin articles
• Weak titles/descriptions

Bad signs:

• Wikipedia
• Government sites
• Major publishers
• High-authority brands
• Fresh, detailed pages with thousands of links

3. Check “SERP weakness,” not just keyword difficulty

I’d score a keyword manually:

4. Use competitor reverse engineering

This is often better than brainstorming.

Find 5–10 competitors and ask:

• What keywords bring them traffic?
• Which pages get disproportionate traffic?
• Are they ranking for terms you could create better content for?

Tools:

• Ahrefs → Site Explorer → Organic Keywords
• Semrush → Organic Research / Keyword Gap
• LowFruits → weak competitor SERP discovery

If I were building a lean stack

Budget setup

• Google Search Console (free)
• Google Keyword Planner (free)
• Keywords Everywhere (cheap)
• Manual SERP review

Serious niche site/content operation

• Ahrefs + Google Search Console
• Add LowFruits for finding weak SERPs

Agency/content team

• Semrush + Ahrefs (different strengths)
• Screaming Frog for technical validation

A simple “buy or skip” rule

A keyword is usually worth pursuing when:

• It has meaningful search intent
• The top results are beatable
• You can create a page that satisfies the query better
• You do not need an unrealistic number of backlinks to compete

The biggest mistake is chasing high-volume keywords with low tool difficulty without checking who actually owns the SERP. The SERP itself is usually the best difficulty estimator. Ahrefs Ahrefs

If you tell me your niche (affiliate site, SaaS, local business, blog, ecommerce, etc.) and current domain strength, I can suggest a more specific keyword-research workflow and filters.

Tools:

• Ahrefs → Site Explorer → Organic Keywords
• Semrush → Organic Research / Keyword Gap
• LowFruits → weak competitor SERP discovery

If I were building a lean stack

Budget setup

• Google Search Console (free)
• Google Keyword Planner (free)
• Keywords Everywhere (cheap)
• Manual SERP review

Serious niche site/content operation

• Ahrefs + Google Search Console
• Add LowFruits for finding weak SERPs

Agency/content team

• Semrush + Ahrefs (different strengths)
• Screaming Frog for technical validation

A simple “buy or skip” rule

A keyword is usually worth pursuing when:

• It has meaningful search intent
• The top results are beatable
• You can create a page that satisfies the query better
• You do not need an unrealistic number of backlinks to compete

The biggest mistake is chasing high-volume keywords with low tool difficulty without checking who actually owns the SERP. The SERP itself is usually the best difficulty estimator.

Yes. The key is not to trust a single “keyword difficulty” number. Most tools calculate difficulty differently, and even Ahrefs explicitly recommends validating opportunities with a detailed SERP analysis. Ahrefs Ahrefs

My top picks

1. Ahrefs — best all-around choice

I particularly like Ahrefs for estimating actual ranking difficulty because its KD metric is based heavily on the referring domains of pages already ranking. For example, Ahrefs estimates that a KD 40 keyword requires roughly 56 referring domains for a typical page to reach the top 10. Ahrefs

More importantly, you can inspect the actual top 10 and ask:

• How many backlinks do these pages have?
• Are the ranking pages genuinely authoritative?
• Are there weak pages in positions 5–10?
• Does the content actually satisfy the search intent?
• Are forums, Reddit, small sites, or mediocre articles ranking?

That last part is much more useful than simply saying "KD = 12."

2. Semrush — best for finding opportunities specific to your site

Semrush has a particularly interesting feature: Personal Keyword Difficulty (PKD%). It attempts to estimate difficulty relative to your particular domain, rather than treating every website as equally capable of ranking. Semrush

That's useful because:

A keyword with KD 50 isn't necessarily difficult for an established site, and KD 15 isn't necessarily easy for a brand-new domain.

Semrush also gives you the top-ranking pages, SERP features, intent, volume, and other competitive signals. Semrush

3. LowFruits — my favorite specialist tool for "find me something I can actually rank for"

This is the one I'd add if your primary objective is low-competition keywords rather than general SEO research.

Its approach is different: instead of relying primarily on an aggregate difficulty score, it looks for weaknesses in the current SERP, such as lower-authority sites, forums, Q&A pages, and other potentially beatable results. Techcognate

That's extremely useful for:

• New websites
• Niche sites
• Affiliate sites
• Small businesses
• Long-tail content strategies

How I'd estimate "true" ranking difficulty

I'd use a three-layer process rather than trusting KD:

Layer 1 — Find candidates

Use Ahrefs/Semrush/LowFruits to find terms with:

• Relevant intent
• Reasonable search demand
• Low/moderate KD
• Long-tail specificity
• Commercial value where appropriate

Layer 2 — Analyze the actual SERP

This is the most important step.

A keyword becomes much more attractive when you see something like:

Position 1: huge authoritative site
Position 2: huge authoritative site
Position 3: small niche site
Position 4: Reddit
Position 5: mediocre article
Position 6: small business
Position 7: forum
Position 8: mediocre article

I'd often prefer that SERP over one where every result is a highly optimized page from DR/DA-90 domains—even if the first keyword has a nominally higher KD.

Layer 3 — Compare the SERP to your site

Ask:

1. Do I have comparable topical authority?
2. Can I create something substantially better?
3. Does my site have comparable backlinks to the weaker results?
4. Can I satisfy the intent better?
5. Are the ranking pages actually comprehensive, or are they ranking because Google has few good alternatives?
6. Are there multiple weak domains on page one?

That gives you a much more realistic "Can my site rank?" assessment.

A particularly good stack

If I were building an SEO workflow today, I'd use:

Low budget:
Google Keyword Planner + Search Console + manual SERP analysis

Serious solo SEO:
Ahrefs + LowFruits + Search Console

Agency/content team:
Semrush + Ahrefs + Search Console

The combination I'd personally favor for uncovering hidden opportunities is Ahrefs for discovery/backlinks + LowFruits for SERP weakness + Search Console for first-party validation.

The big takeaway: "KD < 20" is a filter, not a verdict. The strongest low-competition opportunities are usually identified by looking at who actually ranks, how strong those individual pages are, and whether your site can produce a better result. Ahrefs Ahrefs

If you tell me your site/niche and approximate domain authority/age, I can also give you a concrete keyword-research workflow with thresholds for volume, KD, backlinks, and SERP weakness.

The combination I'd personally favor for uncovering hidden opportunities is Ahrefs for discovery/backlinks + LowFruits for SERP weakness + Search Console for first-party validation.

The big takeaway: "KD < 20" is a filter, not a verdict. The strongest low-competition opportunities are usually identified by looking at who actually ranks, how strong those individual pages are, and whether your site can produce a better result.

Yes. If your goal is “find keywords that look low-competition in a database, then verify that they’re actually winnable,” I’d use a combination rather than trusting a single KD score.

My top picks

• Ahrefs — Best overall for SERP-level competitive analysis. Its KD is primarily based on referring domains to the top-ranking pages, and Keywords Explorer also gives you traffic potential and detailed SERP data.

Yes. If your goal is “find keywords that look easy in a tool but are actually winnable”, I’d use a combination rather than trusting a single Keyword Difficulty (KD) score.

My recommended stack

• ahrefs.com — best overall for serious keyword research

• Excellent keyword database and competitor analysis.
• Its KD is primarily based on the referring domains of pages ranking in the top 10. Ahrefs
• Particularly useful for finding keywords where competitors have relatively weak backlink profiles.
• Best for: established sites, competitor gap analysis, backlink-informed difficulty.
• semrush.com — best all-around alternative

• Gives KD%, volume, intent, SERP features, and the actual top 10 results.
• Its current KD model incorporates backlink and domain-authority signals rather than relying on volume alone. Semrush
• Best for: broad keyword discovery + SERP analysis + competitor research in one platform.
• lowfruits.io — particularly good for genuinely weak SERPs

• This is the one I'd add if your primary objective is low-competition long-tail keywords.
• Rather than simply asking "How many backlinks do the top results have?", it focuses heavily on finding weak/low-authority sites already ranking.
• That can be much more actionable than a generic KD number.
• search.google.com — essential and free

• Not really a keyword-discovery replacement for Ahrefs/Semrush, but it's arguably the best source for finding keywords Google already thinks your site is relevant for.
• You can identify queries with lots of impressions but mediocre positions/CTR and expand those into new content opportunities. Google explicitly recommends using queries, impressions, clicks and position to analyze opportunities. Google Help Google Help
• Best for: finding your site's actual low-hanging fruit.

How I'd estimate "true" ranking difficulty

Don't treat KD = 18 as meaning "easy."

Instead, I'd score a keyword using roughly this process:

1. Use Ahrefs/Semrush to filter candidates

• Reasonable search demand
• Low/moderate KD
• Relevant search intent
• Actually inspect the SERP

• Are there small/niche sites ranking?
• Are there pages with few referring domains?
• Are the ranking pages poorly optimized or outdated?
• Does the SERP contain forums, Reddit, Quora, thin affiliate pages, etc.?
• Are the results genuinely answering the query, or is Google settling for mediocre results?
• Compare the ranking pages to your site

• Domain authority isn't enough.
• Look at page-level backlinks, topical authority, content depth, freshness and search intent.
• A SERP full of huge domains isn't necessarily impossible if their individual pages are weak.
• Look for "weak winners"

This is probably the strongest signal. If a relatively small site with modest backlinks is sitting at #2–#5, that's evidence that Google is willing to rank a page like yours.

5. Use your own Search Console data

If your site is already getting impressions for related queries, that's a particularly attractive opportunity because Google already has evidence that your site is relevant. Google Help Google Help

A simple practical difficulty model

I'd think of it like:

True Difficulty = SERP strength + page strength + intent match + authority gap

rather than:

True Difficulty = KD score

That's important because third-party KD metrics necessarily simplify Google's ranking system. Even Ahrefs acknowledges that no SEO tool can calculate an objectively "accurate" difficulty score, and different tools use different formulas. Ahrefs

What I'd buy

My favorite workflow: use Ahrefs or Semrush for breadth → LowFruits for weak-SERP discovery → manually inspect the SERP → validate against your own GSC data.

If you tell me your site type/niche and roughly how authoritative the site is, I can also give you a concrete “true keyword difficulty” scoring framework (including exactly what to look for in the top 10) that is more useful than the standard KD number.

Yes. If your goal is **finding genuinely low-competition keywords—not just keywords with a low “KD” number—I’d use a combination of a keyword database + manual SERP analysis.

My top picks

• ahrefs.com — best overall

• Excellent for discovering long-tail variations, related topics, and competitor keywords.
• Its Keyword Difficulty (KD) is primarily based on the backlink strength of top-ranking pages. Ahrefs Ahrefs
• More importantly, look at Traffic Potential, which estimates the organic traffic the #1 page receives across all of its ranking keywords. This can expose keywords with modest search volume but substantial traffic opportunity. Ahrefs Help Center
• Parent Topic is also useful for avoiding the mistake of creating five pages targeting essentially the same search intent. Ahrefs Help Center
• semrush.com — best for personalized difficulty

• Particularly interesting because Semrush now provides Personal Keyword Difficulty (PKD) alongside standard KD.
• PKD incorporates your site's topical relevance, authority, and the competitors currently ranking, so it answers a much more useful question: “How difficult is this keyword for my site?” Semrush Semrush
• This is one of my favorite ways to identify keywords that look competitive generally but are actually attainable for an established site. Semrush
• semrush.com — good for validating individual keywords

• Useful when you've already found a candidate and want to inspect volume, intent, KD, SERP features, and the actual top 10. Semrush

The important part: don't trust KD blindly

No keyword tool can give you the “true” ranking difficulty as a single number. Even Ahrefs explicitly recommends manually examining the SERP because its KD metric doesn't account for everything that affects ranking. Ahrefs

For each promising keyword, I'd manually score the top 10 on:

1. Domain strength — Are the results dominated by huge sites?
2. Page-level authority — Do the actual ranking pages have many quality referring domains?
3. Search intent — Do the existing results actually satisfy the query?
4. Content quality — Are the current results genuinely excellent, or merely ranking because Google has limited alternatives?
5. Topical authority — Do the ranking sites have strong coverage of the subject?
6. Exact-match weakness — Are there pages ranking that aren't particularly relevant to the query?
7. Freshness — Could a substantially better/newer page realistically displace them?
8. SERP composition — Are there forums, Reddit, thin affiliate pages, PDFs, videos, etc. that suggest Google is struggling to find ideal results?

My preferred workflow

Ahrefs/Semrush → filter for opportunities → manually inspect SERPs → prioritize.

For example, I'd rather target:

800 searches/month + weak SERP + 3 genuinely authoritative competitors

than:

5,000 searches/month + “KD 20” + ten extremely strong pages that perfectly match intent.

And I'd especially look for low PKD + meaningful traffic potential in Semrush, or low/moderate KD + high traffic potential in Ahrefs. Those combinations are much more informative than volume alone. Ahrefs Help Center Semrush

If you tell me your niche + roughly how authoritative your site is (new site / established / strong backlink profile), I can also give you a concrete keyword-difficulty scoring framework (including the SERP signals I'd use to decide whether a keyword is actually winnable).

Yes. If your goal is specifically finding genuinely winnable keywords, I’d avoid treating any single “KD” score as gospel. The best workflow combines keyword discovery with manual SERP analysis—especially looking at who currently ranks, not just how authoritative the keyword looks numerically.

My top picks

• ahrefs.com — best for estimating organic difficulty

• Excellent SERP data, backlink analysis, search volume, and “Traffic Potential.”
• Its KD is primarily based on the backlink strength of pages ranking in the top 10. Ahrefs Ahrefs
• Particularly useful for answering: “Could my page realistically break into the top 10?”
• My pick if you want one serious SEO tool.
• semrush.com — best all-around competitor research

• Gives a 0–100 KD score, volume, intent, SERP features, and the actual top 10 results. Semrush
• Strong choice if you're also researching competitors and content gaps.
• ads.google.com — best source for Google's own search-volume data

• Generates keyword ideas and provides estimated monthly searches and trends. Google Help Google
• Important: its “Competition” metric is primarily about paid advertising competition, not how difficult organic SEO is. Ahrefs
• I use it as a volume sanity check rather than as my SEO difficulty tool.
• LowFruits — excellent for finding genuinely weak SERPs

• Particularly interesting for small sites because the strategy is to identify keywords where weak/low-authority sites are already ranking.
• This is often more actionable than simply filtering for KD < 20.
• KWFinder / Mangools — good simpler option

• Easier to learn than Ahrefs/Semrush and useful if you're doing straightforward long-tail research without needing a giant SEO suite.

What I mean by “true” ranking difficulty

Here's the key distinction:

Tool-reported KD ≠ actual difficulty for your particular site.

Suppose a keyword has:

KD: 35

That doesn't automatically mean it's difficult.

I'd inspect the first page and ask:

1. Are there small/weak sites ranking?
2. Are there pages that don't directly answer the query?
3. Are the ranking pages poorly optimized?
4. Do the top results have relatively few referring domains?
5. Are forums, Reddit, Quora, PDFs, directories, etc. appearing?
6. Does Google seem unsure about the search intent?
7. Could I create something substantially better/more useful?
8. Are the top results dominated by huge brands with massive authority?

If you see something like:

#1 DR 18
#2 DR 12
#3 Reddit
#4 DR 25
#5 mediocre article from 2019
#6 niche site with 15 backlinks

…I'd consider that a much more attractive SERP than a keyword with KD 15 where every result belongs to extremely authoritative sites.

The workflow I'd recommend

For serious keyword hunting, I'd use:

Ahrefs/Semrush → keyword expansion → filter → SERP inspection → Google validation

For example:

1. Generate thousands of candidates

Use seed keywords, competitor URLs, related terms, questions, modifiers, and long-tail variations.

2. Apply rough filters

Something like:

• Volume: ≥ 50
• KD: ≤ 20–30
• Relevant to your business
• Clear search intent
• Commercial value where appropriate

Don't make these thresholds absolute.

3. Inspect the actual SERP

This is where you determine true difficulty.

I'd give each keyword a manual score:

Then prioritize keywords with high scores rather than blindly sorting by KD.

4. Check search demand

Use Google Keyword Planner as a second data point. Google says Keyword Planner provides keyword ideas, monthly-search estimates, and trend information. Google Help

5. Look at traffic potential, not just keyword volume

A keyword showing 100 searches/month might actually be attached to a topic capable of generating substantially more traffic through related queries. Ahrefs explicitly exposes a Traffic Potential metric for this reason. Ahrefs

If I were building a lean stack

Budget: Google Keyword Planner + manual Google SERP research

Solo SEO: Ahrefs or Semrush + Google Keyword Planner

Small/new website: Ahrefs + LowFruits

Large content operation: Semrush + Ahrefs, with automated SERP/content analysis

The most important takeaway: don't search for “low KD keywords”; search for keywords where the current SERP contains evidence that Google is willing to rank a site like yours. That's a much better definition of low competition.

Then prioritize keywords with high scores rather than blindly sorting by KD.

4. Check search demand

Use Google Keyword Planner as a second data point. Google says Keyword Planner provides keyword ideas, monthly-search estimates, and trend information.

Yes. The key is not to trust a single “KD” number. Tool scores are estimates; the closest thing to “true” ranking difficulty is analyzing the actual SERP and the strength of the pages currently ranking. Semrush explicitly describes KD as an estimate, while Ahrefs exposes page-level backlink metrics for exactly this reason. Semrush Ahrefs

My recommended stack

• ahrefs.com — best for estimating actual ranking difficulty

• Use Keywords Explorer to discover terms and inspect the live SERP.
• Pay particular attention to UR, referring domains, backlinks, and the quality of the top-ranking pages, rather than just KD.
• Ahrefs' SERP Checker specifically exposes these page-level metrics and says UR has the strongest correlation with rankings. Ahrefs
• Best choice if your question is: “Could my site realistically beat these pages?”
• semrush.com — best all-around keyword discovery

• Excellent for generating huge keyword lists, competitor keyword gaps, intent, SERP features, and filtering by KD.
• Its KD model incorporates referring domains, domain authority, SERP features, search volume, and other factors. Semrush
• Best choice if your question is: “Where are all the opportunities I haven't found yet?”
• LowFruits — particularly good for finding weak SERPs

• Its core strength is identifying keywords where relatively weak sites are already ranking.
• That's often much more useful for a smaller website than simply filtering for “KD < 20.”
• Current comparisons consistently position it specifically around low-competition, long-tail discovery. Techcognate SharkPlatform
• Best choice if your question is: “Show me keywords where weaker competitors are already winning.”
• ads.google.com — useful free baseline

• Good for validating search demand and discovering variants.
• Don't use its PPC “competition” metric as your organic SEO difficulty score; they're different concepts.
• Pair it with Search Console for a particularly useful free workflow.
• serpstat.com — good middle ground

• Provides volume, difficulty, CPC, intent, competing domains, and SERP information in one workflow. Serpstat Knowledge Base Serpstat

How I'd measure “true” difficulty

Instead of:

Keyword → KD = 17 → publish

I'd use:

Keyword discovery → SERP inspection → competitor weakness → site-specific assessment

For each promising keyword, look at:

1. How many genuinely strong pages are in the top 10?

• Don't just look at domain authority.
• A DR/DA 80 domain can have a surprisingly weak individual page.
• Referring domains to the ranking URLs

• If several top-10 pages have only a handful of quality referring domains, that's a strong opportunity signal.
• Content/intent match

• Are the ranking pages actually answering the query well?
• Are there outdated, thin, generic, or poorly targeted pages?
• Weak-domain presence

• If small/niche sites are ranking alongside huge publishers, that's often more meaningful than a generic KD score.
• SERP composition

• Forums, Reddit, Quora, UGC, thin affiliate pages, old articles, etc. can indicate exploitable SERP weakness.
• Conversely, a SERP dominated by highly authoritative, purpose-built pages is usually harder.
• Your site's authority relative to the SERP

• A keyword with KD 30 might be easy for an established site but difficult for a brand-new domain.
• This is why “difficulty” isn't really a universal number.

My favorite combination

If you're serious about finding low-competition opportunities, I'd use:

LowFruits → Ahrefs → Google Search Console

LowFruits finds the weak SERPs, Ahrefs lets you investigate whether the ranking pages are genuinely beatable, and Search Console tells you which queries Google is already associating with your site.

If you want one tool only, I'd pick Ahrefs for serious SEO work. If you're building a relatively small site and your primary goal is finding unusually easy keywords, I'd strongly consider LowFruits + Ahrefs.

The biggest mistake is filtering a database for KD < 30 and assuming you've found easy keywords. A manual SERP check can overturn that conclusion surprisingly often. Semrush backlinkmanagement.io

Yes. If your goal is “find keywords I can realistically rank for,” rather than simply sort by a tool’s KD score, I’d use a combination of keyword discovery + SERP-level analysis.

My top picks

• lowfruits.io — best for finding genuinely weak SERPs.

This is probably the most directly aligned with your goal. It analyzes SERPs in bulk and flags “weak spots”—for example, lower-authority sites already ranking on page one. It also supports long-tail discovery and keyword clustering. LowFruits LowFruits

• ahrefs.com — best all-around research tool.

Ahrefs' KD is primarily backlink-based, so it's useful for estimating the link authority hurdle. More importantly, it gives you SERP data and Traffic Potential, which estimates how much organic traffic the current #1 page receives across all the queries it ranks for. Ahrefs Ahrefs Help Center

• semrush.com — best for combining difficulty + intent + SERP analysis.

Its KD incorporates factors including referring domains, domain authority, SERP features, search volume, and other signals. It also shows the actual top-ranking pages, their backlinks/authority, intent, and SERP features. Semrush

• ahrefs.com — excellent for validating a shortlist.

Once you've found a promising keyword, inspect the actual top 10 rather than trusting the aggregate KD number. This is particularly useful because ranking difficulty can vary substantially by location. Ahrefs

The important part: don't trust KD alone

A keyword with KD 15 isn't necessarily easy, and a keyword with KD 40 isn't necessarily impossible.

I'd score a keyword roughly like this:

That's why I particularly like LowFruits + Ahrefs together: LowFruits helps identify weak SERPs, while Ahrefs gives you backlink difficulty and traffic potential. Ahrefs itself cautions that KD should be treated as a first filter and that detailed SERP analysis is still necessary. Ahrefs

A practical workflow I'd use

1. Generate a big keyword universe
Use Ahrefs/Semrush to pull thousands of related terms, competitor keywords, questions, and long-tail variants.

2. Filter aggressively
Start with something like:

• KD ≤ 20–30
• reasonable traffic potential
• relevant search intent
• exclude irrelevant SERP types

3. Run the survivors through LowFruits
Look for keywords with multiple weak spots, rather than merely a low numerical KD. LowFruits specifically recommends bulk SERP analysis because a generic KD score doesn't capture all of the competitive picture. LowFruits

4. Manually inspect the top 10 for your best candidates
Ask: “If I produced an excellent result specifically for this search intent, is there an obvious reason Google couldn't put me here?”

5. Prioritize by expected ROI, not volume.
A 150-search/month keyword where you have a strong chance of reaching #1 can be far more attractive than a 10,000-volume keyword dominated by huge sites.

If I were choosing only one

• New/small site: LowFruits
• Serious SEO operation: Ahrefs
• SEO + competitor/content/marketing suite: Semrush
• Best combination for finding “actually rankable” terms: Ahrefs + LowFruits

And one metric I would not optimize around is raw search volume. Ahrefs' Traffic Potential example illustrates why: a keyword with 500 searches/month can have a #1 ranking page receiving thousands of visits from the many related queries it ranks for. Ahrefs Help Center

If you tell me your niche + roughly how authoritative your site is (new site, DR/DA, or approximate organic traffic), I can give you a concrete low-competition keyword scoring framework with thresholds I'd use for your site.

Yes. If your goal is specifically finding keywords that are genuinely winnable, I’d use a combination rather than trusting one “KD” number.

My top picks

• ahrefs.com — best for rigorous SERP/backlink analysis.

Its KD is primarily based on referring domains pointing to the top-ranking pages, so it gives you a useful estimate of the link authority you’ll be competing against. More importantly, Ahrefs has Traffic Potential, which estimates the traffic the #1 page receives across all the queries it ranks for—not just the keyword's stated search volume. Ahrefs Ahrefs Help Center

• semrush.com — best for personalized difficulty.

This is probably the most interesting option if by “true difficulty” you mean “How hard is this keyword for my site?” Semrush's Personal Keyword Difficulty (PKD) considers your domain's topical relevance, authority, and the competitive domains appearing in the SERP. Semrush Semrush
A particularly useful strategy is finding keywords with high general KD but low PKD—they may look competitive generally but be quite achievable for your particular site. Semrush

• LowFruits — best for discovering genuinely weak SERPs.

I'd add this if your priority is low-competition long-tail opportunities, rather than simply generating huge keyword lists. Its core appeal is identifying SERPs where relatively weak sites are already ranking—often a better indication of opportunity than a generic KD score.

• Google Keyword Planner — best free source for validating demand.

I wouldn't use its “competition” number as organic SEO difficulty; Google's competition metric is primarily about paid advertising, not organic rankings. Ahrefs

How I'd actually evaluate a keyword

Don't do:

KD = 18 → easy → publish

Instead, I'd use this workflow:

1. Find candidates: Semrush / Ahrefs / LowFruits.
2. Filter for reasonable demand: Don't obsess over volume; check whether the topic has meaningful traffic potential.
3. Check the actual SERP: Open the top 10.
4. Look for weak competitors: Small sites, low-authority domains, pages with few referring domains, outdated content, poor intent match, thin content, forums/Reddit, etc.
5. Compare page-level authority, not just domain authority.
6. Check search intent: Can you produce a page that is better aligned with what Google is currently rewarding?
7. Check traffic potential: A 500-volume keyword can sometimes be substantially more valuable than a 5,000-volume keyword if the ranking pages capture traffic from hundreds of related queries. Ahrefs explicitly recommends this kind of analysis. Ahrefs Help Center
8. Then make your own difficulty judgment.

The metric stack I'd trust

For a relatively small/new site, I'd prioritize:

Personalized difficulty → SERP weakness → referring domains → intent match → traffic potential → search volume

rather than:

search volume → generic KD → publish

That's because keyword difficulty isn't a Google metric; it's an estimate made by each SEO platform, and the underlying formulas differ. Semrush, for example, incorporates referring domains, domain authority, SERP features, volume, and other factors, while Ahrefs' KD is much more explicitly backlink-focused. Semrush Ahrefs Help Center

If I could only pay for one: I'd pick Ahrefs for deep SEO research, or Semrush if the personalized PKD feature is particularly important to you.

If I were building a low-competition keyword system: Semrush + Ahrefs + LowFruits is a very strong combination—Semrush for discovery/personalization, Ahrefs for backlink/SERP validation and traffic potential, and LowFruits for finding unusually weak SERPs.

For finding low-competition keywords and estimating true ranking difficulty, I’d avoid relying on a single “KD” number. The best workflow combines keyword discovery, SERP analysis, and a reality check against your own site authority. Keyword difficulty scores are estimates, not Google metrics, and different tools calculate them differently. Ahrefs Ahrefs

Best tools by use case

Ahrefs Semrush## My recommended stack

If you run a new site

Use:

1. Ahrefs or Semrush → generate thousands of ideas
2. LowFruits → find terms where weak domains already rank
3. Manual SERP review → confirm the keyword is actually winnable

A keyword with a low KD score but a SERP dominated by huge brands can still be difficult. Ahrefs

If you have an established site

Use:

• Semrush competitor gap analysis
• Ahrefs Content Explorer + Keywords Explorer
• Google Search Console query mining

Look for keywords where:

• competitors rank but you don’t
• your pages rank positions 5–20
• the SERP contains weaker pages you can outperform

How to estimate “true” ranking difficulty

Don’t just check KD. Score the SERP manually:

1. Check who ranks

Good signs:

• small niche sites ranking
• forums or community pages ranking
• outdated articles
• pages with poor UX/content

Bad signs:

• Wikipedia
• major publishers
• government sites
• dominant brands with strong backlinks

2. Check backlinks

Look at the top 10 results:

• How many referring domains do they have?
• Are those links earned naturally or mostly from authority sites?
• Can you realistically match them?

Ahrefs’ KD, for example, is heavily based on referring domains pointing to ranking pages, which makes it a useful first filter but not a complete answer. Ahrefs

3. Check search intent

A keyword is easier when your content type matches what Google wants.

Examples:

Easier:

• “best hiking socks for sweaty feet”
• “how to fix [specific problem]”

Harder:

• “shoes”
• “insurance”
• “credit cards”

4. Look for “weak SERPs”

A very strong signal:

A low-authority website ranking in the top 5 for a valuable keyword.

That means Google is already willing to rank smaller sites for that query. Ahrefs

A practical keyword scoring formula

I’d score opportunities like this:

Opportunity Score =

• Search intent match: 0–5
• SERP weakness: 0–5
• Backlink gap: 0–5
• Business value: 0–5
• Search volume: 0–5

A keyword with 800 searches/month and a score of 22/25 is often better than a keyword with 50,000 searches/month and a score of 8/25.

My short list

• Best overall: Ahrefs + Semrush combo
• Best for finding overlooked wins: LowFruits
• Best budget option: Mangools
• Best free starting point: Google Search Console + Google Keyword Planner
• Best “don’t trust the KD blindly” practice: manual SERP analysis

If your goal is building a content site, affiliate site, SaaS blog, or local business SEO strategy, the ideal tool choice changes quite a bit.

Yes. If your goal is finding genuinely low-competition keywords, rather than blindly sorting by a tool's KD score, I'd use a combination of a keyword database + SERP analysis.

My top picks

• ahrefs.com — best overall

• Excellent for discovering long-tail opportunities at scale.
• Its KD is based primarily on the referring domains pointing to the current top-ranking pages, which makes it particularly useful for estimating the link authority you'll need to compete. Ahrefs Ahrefs Help Center
• The important part: don't stop at KD. Open the SERP and inspect the actual ranking pages, backlinks, intent, and traffic potential.
• Best for: serious SEO research and competitive analysis.
• semrush.com — best for finding opportunities tailored to your site

• Particularly interesting because Personal Keyword Difficulty (PKD) estimates difficulty specifically for your domain rather than treating every website equally. It considers your site's relevance/authority alongside the competing SERP. Semrush Semrush
• This can surface keywords with a high generic KD but a surprisingly achievable ranking opportunity for your site.
• Best for: established sites with some existing authority.
• ahrefs.com — best for validating "true" difficulty

• Useful when you've already found a keyword and want to examine the actual top 10.
• You can analyze results by location, which matters because ranking difficulty can differ substantially between markets. Ahrefs
• Best for: validating whether a promising-looking keyword is actually winnable.

The key: calculate your own "real difficulty"

No third-party KD score is truly the ranking difficulty. Even Ahrefs explicitly notes that KD is an estimate and that manual SERP analysis gives you more information. Ahrefs Ahrefs

For a keyword I'm seriously considering, I'd check:

1. Top 10 referring domains — How many sites link to each competing page?
2. Domain authority/strength — Are the results dominated by huge sites?
3. Page-level authority — A weak page on a powerful domain can still be easier to beat than its domain suggests.
4. Search intent — Do the current results actually satisfy the query well?
5. Content quality — Are the top results comprehensive, outdated, thin, or poorly structured?
6. Exact topical match — Are the ranking pages specifically about the query, or are they ranking incidentally?
7. SERP composition — Forums, Reddit, Quora, small niche sites, PDFs, etc. can indicate openings.
8. Traffic potential — Don't assume a 1,000-volume keyword produces 1,000 potential clicks. Some SERPs absorb enormous amounts of traffic through features or a dominant result.

A workflow I'd actually use

Ahrefs → find candidates → filter low KD → inspect SERP → compare competing pages → make your own difficulty judgment.

For example, I'd rather target:

KD 25 + several weak pages in the top 10 + 5–20 referring domains

than:

KD 10 + ten extremely authoritative sites dominating the SERP

That's because the second keyword can be deceptively difficult despite its low tool score.

If you have a new/low-authority site, I'd lean toward Ahrefs + manual SERP analysis. If you already have meaningful authority and rankings, Semrush's PKD is especially interesting because it attempts to answer the question that generic KD can't: "How hard is this keyword for my particular website?" Semrush

If you tell me your niche + approximate site authority/age, I can also give you a concrete keyword-difficulty scoring framework (0–100) that combines backlinks, domain strength, intent, content quality, and SERP weakness rather than relying on Ahrefs/Semrush KD alone.

For finding low-competition keywords, the best tools are not necessarily the ones with the biggest keyword databases. The key is finding tools that help you estimate real ranking difficulty by analyzing the actual SERPs (who ranks, why they rank, and what authority they have).

Here are the strongest options:

Best overall SEO suites

Ahrefs

Best for: SERP-based difficulty analysis and competitor keyword mining

Strengths:

• Excellent competitor research: see exactly which keywords competitors rank for.
• Strong backlink analysis to judge whether top-ranking pages are beatable.
• Keyword Difficulty (KD) is heavily influenced by referring domains to ranking pages. Ahrefs
• Great for finding “weak SERPs” where page-one results have few quality links.

Use it for:

• “Find keywords where sites with DR/DA lower than mine are ranking.”
• “Find competitor pages getting traffic from long-tail queries.”

Weakness:

• Expensive for casual users.

Semrush

Best for: scalable keyword discovery and personalized difficulty estimates

Strengths:

• Huge keyword database.
• Keyword Magic Tool makes it easy to filter by: - volume
• intent
• keyword difficulty
• CPC
• topic clusters Semrush
• Its Personal Keyword Difficulty feature attempts to estimate difficulty relative to your own domain rather than a generic website. Semrush

Use it for:

• Building content calendars.
• Finding thousands of variations around a topic.

Weakness:

• Still requires manual SERP checking.

Tools that are especially good for newer/smaller sites

LowFruits

Best for: finding keywords where weak sites already rank

Workflow:

1. Enter a niche/topic.
2. Find keywords where the SERP contains: - forums
3. small blogs
4. low-authority domains
5. thin content pages
6. Prioritize those.

Why it works:
A keyword with “KD 20” can still be hard if every result is a major brand. A keyword with “KD 40” can be easy if the SERP is full of weak pages.

Mangools (KWFinder)

Best budget-friendly option

Good for:

• beginners
• niche sites
• long-tail keyword discovery

Useful metrics:

• keyword difficulty
• SERP overview
• competitor authority signals

Less powerful than Ahrefs/Semrush for deep competitor research.

Moz Keyword Explorer

Best for simple prioritization

Useful metrics:

• Keyword Difficulty
• Organic CTR
• Priority score

Good if you want a cleaner workflow and less data overload.

Free / low-cost sources worth combining

Google Search Console

Best source for finding “almost ranking” opportunities

Look for:

• pages ranking positions 8–30
• queries with impressions but low clicks

These often require:

• better titles
• stronger internal links
• content expansion

Google Keyword Planner

Best for demand validation

Useful for:

• approximate search volume
• commercial intent
• CPC signals

But its “competition” metric is mostly for paid ads, not organic SEO difficulty.

AlsoAsked and AnswerThePublic

Best for discovering question-based long tails

Good for finding:

• “how do I…”
• “best way to…”
• comparison searches
• problem-focused queries

These often have lower competition because they are more specific.

How I estimate true ranking difficulty (better than trusting KD)

I would score a keyword manually using these checks:

1. Look at the top 10 results

Good signs:

• Reddit/forums ranking
• outdated articles
• thin content
• pages that barely answer the query
• small niche sites

Bad signs:

• Wikipedia
• government sites
• major publishers
• dominant brands
• pages with thousands of backlinks

2. Compare authority

Check:

• Domain Rating (DR)
• Domain Authority (DA)
• number of referring domains

A realistic opportunity often looks like:

3. Look for “low-hanging fruit patterns”

Examples:

Instead of:

• “running shoes”

Try:

• “best running shoes for plantar fasciitis beginners”
• “zero drop running shoes for wide feet”
• “trail shoes for wet rocky terrain”

Instead of:

• “CRM software”

Try:

• “CRM for freelance photographers”
• “simple CRM for construction contractors”

The more specific the intent, the easier it is to match search intent.

My preferred tool stack by budget

$0/month

• Google Search Console
• Google Keyword Planner
• Google autocomplete
• AlsoAsked/AnswerThePublic free usage
• Manual SERP review

~$50–100/month

• KWFinder/Mangools
• LowFruits
• Search Console

Serious SEO/content operation

• Ahrefs or Semrush
• LowFruits for opportunity discovery
• Search Console for validation

A good rule: use tools to generate candidates, but use the SERP itself to decide whether you can win. Keyword difficulty scores are directional; the actual top 10 results are the final judge. Ahrefs Semrush

Serious SEO/content operation

If your goal is finding keywords that are actually winnable (not just keywords with a low third-party difficulty score), I’d use a combination of a keyword database + SERP analysis tool + your own validation process.

Best tools for uncovering low-competition keywords

1. ahrefs.com — Best for serious SEO research

Best for: content sites, SaaS, agencies, competitive analysis

Strengths:

• Huge keyword database
• Strong competitor keyword mining
• SERP overview with backlink analysis
• “Traffic Potential” helps avoid chasing keywords with tiny upside
• Keyword Difficulty (KD) is heavily based on the backlink strength of ranking pages Ahrefs

How I’d use it:

1. Find competitors ranking in your niche.
2. Export keywords they rank for in positions 5–20.
3. Filter for: - KD < 20–30
4. decent traffic potential
5. weak SERPs
6. Manually inspect the top 10.

2. semrush.com — Best all-around SEO suite

Best for: businesses that need keyword research + competitor intelligence

Strengths:

• Keyword Magic Tool generates large keyword lists.
• Keyword Difficulty estimates how hard the top 10 results are to break into.
• SERP analysis includes ranking domains and competitive signals. Semrush

Useful filters:

• KD: 0–30
• Search intent: informational/commercial
• Include modifiers: - “best”
• “for beginners”
• “alternative”
• “vs”
• “under $X”
• “near me” (for local)

3. lowfruits.io — Best for finding weak SERPs

Best for: small sites, niche sites, new domains

Its main advantage is that it focuses less on “keyword volume” and more on finding search results where weaker sites are already ranking. That often surfaces opportunities traditional tools miss. Backlink Management

Look for:

• forums ranking on page 1
• low-authority blogs
• thin content ranking
• outdated pages

Those are often better opportunities than a keyword with KD 5 but dominated by giant brands.

4. search.google.com — Best free opportunity finder

Best for: sites that already get impressions

Find:

• queries where you rank positions 5–20
• pages with high impressions but low CTR
• keywords Google already associates with your site

These are usually the easiest wins because you are already in the search ecosystem.

5. ads.google.com — Good for demand validation

Best for: checking whether a keyword has commercial interest

Weakness:

• It is built for Google Ads, not organic SEO.
• Its “competition” metric is paid-search competition, not organic ranking difficulty. Ahrefs

Use it for:

• confirming search demand
• finding variations
• estimating CPC/value

How to estimate true ranking difficulty (better than trusting KD)

Keyword difficulty scores are useful filters, but no tool can perfectly predict rankings because Google evaluates many signals. Ahrefs

For every promising keyword, check:

1. Are weak websites ranking?

Good signs:

• DR/DA under ~30
• small niche sites
• forums
• individual blog posts
• user-generated content

Bad signs:

• Wikipedia
• Reddit dominating every result
• government sites
• major publishers
• huge brands with thousands of links

2. How strong are the top 10 pages?

Look at:

3. Check “SERP weakness,” not just keyword volume

A keyword with:

• 500 searches/month
• weak page-one competitors
• clear intent

is often better than:

• 10,000 searches/month
• dominated by Amazon, Forbes, HubSpot, etc.

My preferred stack by budget

Free

• Google Search Console
• Google Keyword Planner
• Google autocomplete
• Manual SERP analysis

~$50/month range

• LowFruits
• Search Console
• occasional Ahrefs/Semrush trials

Professional SEO

• Ahrefs + Semrush
• Search Console
• SERP analysis spreadsheet

A simple workflow I’d recommend

1. Generate 500–5,000 ideas with Ahrefs/Semrush/LowFruits.
2. Filter: - KD < 30
3. clear search intent
4. enough business value
5. Open the SERP manually.
6. Reject keywords where: - all top 10 results are authoritative
7. intent is unclear
8. Google favors giant brands
9. Prioritize keywords where: - weak sites rank
10. competitors have poor content
11. you can create a clearly better answer

The biggest mistake in keyword research is finding “low KD” keywords that are technically easy but have no realistic traffic or business value. The best opportunities usually come from weak SERPs + clear intent + enough demand, not from a difficulty score alone. Ahrefs Ahrefs

If your goal is to find low-competition keywords that you can realistically rank for, don’t rely on a single “keyword difficulty” score. The best workflows combine:

1. Keyword discovery (finding opportunities)
2. SERP analysis (seeing who actually ranks)
3. Authority comparison (judging whether your site can compete)

Here are the tools I’d consider:

Best all-around SEO suites

ahrefs.com

Best for: accurate competition analysis, competitor research, backlink-driven difficulty estimates.

Why it’s useful:

• Strong keyword database
• Excellent competitor keyword discovery (“what keywords are they ranking for?”)
• Difficulty is heavily influenced by the backlink strength of ranking pages, which is often a good proxy for real-world ranking difficulty. Ahrefs
• Great for finding “weak competitors” where smaller sites are already getting traffic

Best workflow:

• Find competitor pages → export keywords → filter by volume → manually inspect SERPs.

semrush.com

Best for: broader SEO research, content planning, and teams.

Useful features:

• Keyword Magic Tool
• Keyword Gap analysis
• SERP analysis
• Keyword Difficulty (KD%) scoring based on SERP and authority signals Semrush

Good for:

• Finding thousands of keyword variations quickly
• Building topic clusters
• Tracking competitors

Best tools specifically for finding “easy wins”

lowfruits.io

Best for: discovering keywords where weak sites already rank.

This is one of the more interesting tools because it focuses less on a generic difficulty number and more on SERP weakness:

• Finds keywords where forums, low-authority sites, or small blogs appear in the top results
• Helps identify SERPs where a better-targeted page could compete Low Fruits

Use it when:

• Your site is new
• You have limited backlinks
• You want content ideas with realistic ranking potential

Budget-friendly options

mangools.com

Best for: beginners and smaller sites.

Strengths:

• Simple interface
• Good long-tail suggestions
• SERP overview

ads.google.com

Best free baseline tool.

Useful for:

• Search volume estimates
• Commercial keyword ideas
• PPC data

Weakness:

• It is designed for ads, not organic SEO difficulty.

My recommended “true difficulty” workflow

For any keyword, I’d score it manually:

1. Start with a tool-generated shortlist

Example filters:

• Search volume: 100–5,000/month
• KD: low to medium
• Clear search intent

2. Check the actual Google results page

Look for:

Good signs

• Forums ranking
• Thin affiliate pages
• Old/outdated articles
• Small sites with low authority
• Pages that don’t directly answer the query

Bad signs

• Mostly major brands
• Government/academic sites
• Extremely authoritative domains
• Fresh, comprehensive content everywhere

3. Compare against your own site

Ask:

• Do I have similar authority to the ranking sites?
• Can I create a better answer?
• Can I satisfy the search intent more completely?
• Can I earn links naturally?

A KD score is only a shortcut; it is not a guarantee. Both Ahrefs and Semrush emphasize that difficulty metrics are estimates and should be paired with SERP review. Ahrefs Semrush

A practical stack by situation

• New niche site: LowFruits + Google Search Console + Ahrefs (when budget allows)
• Content marketing team: Semrush + Ahrefs
• Solo blogger: Mangools KWFinder or LowFruits
• Enterprise SEO: Semrush + Ahrefs + internal data

If you want the closest thing to “true ranking difficulty,” I’d prioritize SERP weakness analysis over the KD number itself. A keyword with KD 30 can be harder than a KD 50 keyword if the SERP is dominated by unbeatable sites. Low Fruits

Yes. If your goal is finding keywords that look low-competition and are genuinely realistic for your site, I’d prioritize tools that let you inspect the actual SERP rather than trusting a single KD number.

My top picks

• semrush.com — best for personalized difficulty

• Its Personal Keyword Difficulty (PKD) estimates difficulty specifically for your domain, rather than treating every site equally.
• This is particularly useful for finding the sweet spot where a keyword has a relatively high general KD but is still achievable for your site.
• You can combine PKD with competitor keyword gaps, search intent, volume, and SERP analysis. Semrush Semrush
• ahrefs.com — best for SERP-level competitive analysis

• Ahrefs' KD is heavily based on the referring domains of the pages currently ranking.
• More importantly, SERP Overview lets you inspect the actual ranking pages, their backlinks, traffic, and other SEO metrics.
• Its Traffic Potential metric is also excellent: a keyword with 300 searches/month might actually be valuable if the #1 page gets traffic from hundreds of related queries. Ahrefs Ahrefs Ahrefs Help Center
• ads.google.com — useful as a volume/market sanity check

• I wouldn't use its "competition" metric as organic ranking difficulty. Google explicitly distinguishes paid-search competition from organic keyword difficulty. Ahrefs
• It's still useful for validating search demand and commercial intent.

The important part: "true" ranking difficulty

No tool's KD number is the truth. Even Ahrefs says KD should be treated as a first filter and followed by detailed SERP analysis. Ahrefs

For each promising keyword, I'd manually score the SERP on:

1. Weak competitors — Are there forums, Reddit threads, small niche sites, outdated articles, or poorly optimized pages in the top 10?
2. Domain strength — Are the results dominated by huge sites, or are smaller sites already ranking?
3. Page-level backlinks — A powerful domain isn't necessarily difficult to beat if the individual ranking page has few quality referring domains.
4. Search intent — Can you create something substantially better suited to what the searcher wants?
5. Content quality — Are the current results genuinely comprehensive, or are they thin/repetitive?
6. SERP features — AI Overviews, featured snippets, video, local packs, shopping results, etc. can dramatically affect the traffic available even if ranking is easy. Semrush now incorporates SERP features into its difficulty analysis. Semrush
7. Topical authority — Do you already have strong content around the topic? This can make a seemingly competitive keyword considerably more attainable.

A workflow I'd actually use

Semrush → find opportunities → Ahrefs → validate the SERP → Google → sanity-check the actual results.

For example, I'd start with Semrush and look for keywords where:

PKD = Easy/Possible + meaningful volume + strong relevance

Then I'd open the SERP in Ahrefs and look for:

Several top-10 pages with relatively few referring domains + weaker/smaller sites + obvious content gaps.

That's much more reliable than simply saying "KD < 20 = easy."

If you're building a new or low-authority site, I'd especially favor SERPs where at least 2–4 of the current top results are clearly beatable, even if the tool reports a moderate KD. That's often where the real low-competition opportunities are hiding. Semrush Ahrefs

If you tell me your site/niche and roughly how authoritative it is, I can also give you a concrete keyword-research workflow with the exact filters and thresholds I'd use.

Yes. If your goal is specifically “find keywords other sites overlook, then estimate whether my site can actually rank”, I’d use a combination rather than trusting a single KD score.

My top picks

• semrush.com — best for personalized difficulty

• Its Personal Keyword Difficulty (PKD) estimates difficulty for your specific domain, incorporating your site's relevance/authority and the competition in the SERP. Semrush Semrush
• Particularly useful for finding keywords that look competitive generally but are relatively attainable for your site.
• Its Keyword Magic Tool is excellent for filtering huge keyword sets by KD, volume, intent, word count, SERP features, etc. Semrush
• ahrefs.com — best for SERP-level competitive analysis

• Its KD is based primarily on the backlink strength of the current top-ranking pages. Ahrefs Ahrefs Help Center
• More importantly, Traffic Potential estimates the traffic the #1 page gets from all the keywords it ranks for—not just the search volume of your target term. That's extremely useful for avoiding low-volume keywords that have little upside. Ahrefs Help Center
• I particularly like Ahrefs for examining who actually ranks rather than accepting a difficulty number at face value.
• semrush.com — good lightweight starting point

• Shows KD, volume, intent, SERP features and the actual top 10 results. Semrush
• Useful if you don't want to immediately build a massive keyword database.

The important part: “true” ranking difficulty

No tool's KD number is literally the difficulty of ranking. Even Ahrefs explicitly recommends manually examining the SERP because its KD doesn't account for everything. Ahrefs Ahrefs

For each promising keyword, I'd score it using five signals:

A keyword showing KD 35 can actually be easier than one showing KD 15 if the latter has ten extremely relevant, high-quality competitors while the former has several weak/outdated results.

My preferred workflow

I'd do this:

1. Generate thousands of candidates
Use Semrush or Ahrefs.

2. Filter for low difficulty
For a newer/smaller site, start roughly around KD/PKD <30, rather than treating 30 as a universal cutoff. Semrush itself notes that what counts as “good” depends heavily on the site's authority. Semrush

3. Don't automatically pick the lowest KD.
Prioritize:

Low difficulty × meaningful traffic potential × strong business intent

Ahrefs' Traffic Potential is particularly useful here. Ahrefs Help Center

4. Manually inspect the SERP.
This is where I'd estimate “true difficulty.” Look at the actual top 10 and ask:

• How many have strong backlinks?
• How many are exact/intentionally relevant answers?
• Are there weak sites ranking?
• Are there outdated pages?
• Is the search intent poorly served?
• Could your content realistically be substantially better?

5. Compare against your own existing rankings.
Keywords where your site already ranks #8–30 are often better opportunities than completely new terms—you've already demonstrated some relevance.

If I could choose only two

Semrush + Ahrefs is the strongest combination:

Semrush → discover opportunities and get domain-specific PKD.
Ahrefs → validate backlinks, SERP competition and Traffic Potential.
Google itself → manually sanity-check the SERP before committing resources.

The key insight is that “keyword difficulty” and “ranking difficulty for your site” are different questions. Semrush's PKD gets closer to the second question, while Ahrefs is particularly strong at investigating the underlying SERP/link competition. Semrush Ahrefs

If you tell me your niche + approximate domain authority/age + whether the site is new or established, I can also give you a concrete low-competition keyword scoring framework (including thresholds for KD, referring domains, traffic potential, and SERP weakness).

Low difficulty × meaningful traffic potential × strong business intent

Yes. If your goal is finding keywords that are genuinely winnable, rather than blindly filtering for a low “KD” number, I’d use a combination of tools.

My top picks

• ahrefs.com — best overall for SERP-level difficulty

• Excellent keyword discovery and competitor keyword research.
• Its KD is based primarily on the referring domains of the current top-ranking pages. Ahrefs Ahrefs
• Particularly useful because you can inspect the actual backlinks and traffic of the pages ranking for a term.
• Best for: serious SEO research and assessing whether the sites currently ranking are actually beatable.
• semrush.com — best for personalized difficulty

• Its Personal Keyword Difficulty (PKD) attempts to estimate difficulty specifically for your domain, taking topical relevance, your site's authority, and competing domains into account. Semrush Semrush
• This is particularly valuable because a keyword that's “KD 60” for a new site might be much easier for an established topical authority.
• Best for: answering “Can my site realistically rank for this?”
• search.google.com — best source of real-world opportunities

• It shows the actual queries for which Google is already showing your pages, along with impressions, clicks, CTR, and position. Google Help
• Look for queries where you're sitting around positions 5–20. Those are often much better opportunities than starting from scratch.
• Best for: finding low-hanging fruit that keyword databases don't necessarily reveal.

The important part: don't trust KD alone

No third-party tool knows Google's complete ranking algorithm. Even Ahrefs explicitly recommends manually evaluating the SERP rather than relying solely on its KD score. Ahrefs Ahrefs

For a keyword I'm seriously considering, I'd check:

1. Who ranks?

Are the results dominated by huge sites, or are there small/niche sites on page one?

2. Page-level authority

Look at the backlinks/referring domains of the individual ranking pages, not just the domain authority of their websites.

3. Search intent

Does the SERP actually contain the type of page you could create? A keyword can have low backlink competition but still be difficult if Google strongly prefers a different content format.

4. Content quality

Are the current results genuinely excellent, or are they thin/outdated/generic?

5. Topical authority

Do you already have relevant content and expertise around the topic? This can make a major difference.

6. SERP features / click potential

A keyword with 2,000 searches isn't necessarily attractive if ads, AI Overviews, shopping results, videos, etc. absorb most clicks. Semrush now surfaces AI Overview information alongside its keyword data. Semrush

A workflow I'd actually use

Semrush/Ahrefs → generate hundreds/thousands of candidates → filter for reasonable volume + low difficulty → inspect the actual SERPs → validate against Google Search Console → prioritize.

For example, instead of saying:

“KD = 18, therefore easy.”

I'd want something more like:

KD 18 + 3/10 page-one results have <10 referring domains + two small sites ranking + weak/outdated content + my site is topically relevant = high-priority opportunity.

That's a much better approximation of true ranking difficulty than any single score.

If I had to choose just one

Ahrefs if you're primarily interested in analyzing competitors, backlinks, SERPs, and ranking difficulty.

Semrush if the most important question is “How difficult is this keyword for my particular website?” Its PKD metric is unusually useful for that. Semrush

And I'd use Google Search Console regardless of which paid tool you choose, because it gives you your site's actual search performance rather than an estimated model. Google Help

Yes. The key is to separate “keyword difficulty” from actual ranking difficulty. No third-party KD score is a perfect predictor; the best workflow uses a tool to surface candidates, then validates the actual SERP. Ahrefs itself recommends treating KD as a first filter and doing detailed SERP analysis afterward. Ahrefs Ahrefs

My top picks

• ahrefs.com — best overall for serious keyword research

• Excellent for finding long-tail opportunities and keywords competitors already rank for.
• Its KD is primarily based on the backlink strength of the top-ranking pages, which makes it particularly useful for estimating the link-building barrier. Ahrefs
• A particularly useful trick: look for keywords where low-authority domains already rank in the top 5. Ahrefs explicitly supports filtering for this. Ahrefs
• My choice if you want one tool.
• semrush.com — best all-in-one competitor research

• Strong for discovering keywords competitors rank for that you don't.
• Its KD incorporates a much broader set of ranking signals than simply backlinks, and the SERP view gives you page-level metrics, intent and SERP features. Semrush
• Particularly good if you're doing SEO for an established business rather than purely building content sites.
• lowfruits.io — best for hunting genuinely weak SERPs

• I particularly like this category of tool because it focuses less on giving you a pretty KD number and more on finding SERPs containing weak/low-authority competitors.
• That's often a better signal for a small site than simply seeing “KD 12.”
• Recent comparisons also highlight LowFruits specifically for finding low-competition long-tail opportunities. Backlink Management
• search.google.com — essential and free

• Not really a keyword-discovery tool, but incredibly valuable for finding keywords you're already close to ranking for.
• Look for queries where you have lots of impressions but average positions around 5–20. Those are often much easier wins than starting from zero. Search Console exposes queries, impressions, clicks, CTR and position. Google Help Google Help
• keywordinsights.ai — best for turning keyword lists into content opportunities

• More useful once you've accumulated hundreds/thousands of keywords.
• Its clustering approach can help distinguish “1 keyword = 1 article” from situations where Google is really treating dozens of keywords as the same topic.

How I'd estimate true ranking difficulty

Don't use:

KD < 20 = easy

Instead, I'd score a keyword using something like this:

The single strongest manual signal is probably:

“Can a site substantially weaker than mine rank on page one?”

If three or four relatively weak sites are already ranking, that's much more encouraging than a generic KD score of 15.

A workflow I'd actually use

1. Generate a huge candidate list
Use Ahrefs/Semrush/LowFruits with 5–20 seed topics.

2. Filter aggressively
For example:

• reasonable search volume
• low/moderate KD
• commercial or informational intent you actually want
• exclude irrelevant SERPs

3. Look at the actual top 10
This is the step most people skip.

4. Find “weak spots”
I'd flag a keyword if the SERP contains:

• a DR/authority outlier that's substantially weaker than the others
• pages with very few referring domains
• outdated content
• pages that don't directly answer the query
• forums/community pages
• mediocre content ranking simply because Google lacks better options

5. Compare against your site

A keyword with KD 25 might be easy for an established topical site and difficult for a brand-new domain. Conversely, a KD 5 keyword can still be difficult if the intent is dominated by extremely authoritative sites.

6. Prioritize “already almost winning” keywords

Search Console is fantastic here. If one of your pages gets thousands of impressions for related queries while sitting around positions 8–18, improving that page can produce results much faster than publishing a completely new article. Google Help

If I were building a stack today

Budget:
Google Search Console + Google Keyword Planner + manual SERP analysis

Best value for a small site:
LowFruits + Search Console

Best serious SEO stack:
Ahrefs + Search Console

Agency / competitive research:
Semrush + Search Console

And if your goal is specifically “find keywords where a relatively weak site can realistically reach #1–5”, I'd lean toward Ahrefs or LowFruits rather than blindly sorting by KD. The SERP itself is ultimately the ground truth.

6. Prioritize “already almost winning” keywords

Search Console is fantastic here. If one of your pages gets thousands of impressions for related queries while sitting around positions 8–18, improving that page can produce results much faster than publishing a completely new article.

Yes. The key distinction is keyword difficulty ≠ actual ranking difficulty. Most tools give you a useful first-pass score, but the best opportunities come from combining that score with a manual/automated analysis of the actual SERP.

My shortlist

• ahrefs.com — best for serious keyword + backlink analysis

• Excellent for discovering long-tail keywords, competitor keywords, traffic potential, and SERP data.
• Its KD metric is primarily based on referring domains to the top-ranking pages. Ahrefs Ahrefs
• Particularly useful for answering: “How many websites actually link to the pages I need to beat?”
• My pick if ranking difficulty is your main concern.
• semrush.com — best all-around competitor research

• Strong keyword discovery, competitor gap analysis, SERP analysis, intent classification, and historical data.
• Its KD incorporates several SERP authority/link factors rather than relying on a single metric. Semrush
• Great for finding keywords competitors rank for that your site doesn't.
• lowfruits.io — best specifically for “winnable” keywords

• I'd consider this if your goal is finding keywords where weak/low-authority sites are already ranking rather than simply finding keywords with a low numerical KD.
• That's often a much better definition of “low competition.”
• keywordinsights.ai — best for clustering

• Useful when you've generated thousands of keywords and need to determine which queries can be targeted by the same page.
• This prevents the classic mistake of creating 20 articles for 20 keywords that Google actually treats as one topic.
• Google Search Console — essential if you already have a site

• It isn't really a keyword-discovery replacement for Ahrefs/Semrush, but it gives you your own site's actual search data.
• You can find queries where you're already getting impressions but ranking around positions 5–30, which are often much easier wins than starting from zero. Google specifically recommends using queries, impressions, CTR and position to identify opportunities. Google Support Google Support
• search.google.com

How I'd measure “true” ranking difficulty

Don't blindly trust a KD number. Even Ahrefs acknowledges that no third-party tool can perfectly calculate ranking difficulty because Google uses hundreds of signals. Ahrefs

For each promising keyword, I'd score the SERP on:

The signal I value most

“Can a site similar to mine already rank for this?”

For example, suppose a keyword has:

• 1,000 searches/month
• Ahrefs KD = 18
• Top 10 dominated by huge domains
• Every result has hundreds of referring domains

I'd probably skip it.

Conversely:

• 300 searches/month
• KD = 35
• 3 of the top 10 are tiny niche sites
• Several ranking pages have <10 referring domains
• Existing content poorly satisfies the query

I'd consider that a much better opportunity, despite the higher KD.

The stack I'd actually use

For a serious SEO project, I'd use:

Ahrefs/Semrush → LowFruits → Google SERP → Search Console

1. Generate thousands of candidates in Ahrefs or Semrush.
2. Filter for reasonable volume and low/moderate KD.
3. Run the shortlist through LowFruits to identify SERPs containing genuinely weak competitors.
4. Manually inspect the top 10 for the final 20–50 keywords.
5. Once published, use Search Console to discover the real queries Google associates with your pages and expand from there.

That last step is particularly powerful: Search Console can expose queries you never thought to research, including queries where you're getting impressions but haven't yet earned many clicks. Google Support

If you tell me your niche/site type (e.g. SaaS, affiliate site, local business, ecommerce, B2B), I can also give you a specific keyword-research workflow and the exact filters I'd use to uncover low-competition terms.

Yes. If your goal is finding genuinely winnable keywords rather than blindly trusting a “KD 12” score, I’d use a combination of a keyword database + live SERP analysis + your own site’s data.

My top picks

• ahrefs.com — Best all-around choice. Its Keyword Difficulty is primarily based on the referring domains of the top-ranking pages, and its SERP overview lets you inspect the actual competitors rather than relying on the headline score. Ahrefs itself recommends treating KD as a first filter and then doing SERP analysis. Ahrefs

Best for: serious SEO research, competitor keyword discovery, backlink-based difficulty.

• semrush.com — Probably the strongest alternative to Ahrefs. Its KD considers factors including referring domains and domain authority, while its keyword tools expose intent, SERP results, and competitor rankings. It also now offers Personal Keyword Difficulty (PKD), which attempts to estimate difficulty specifically for your domain, rather than treating every site equally. Semrush Semrush

Best for: finding keywords your particular site has a realistic chance of ranking for.

• keywordseverywhere.com — Useful inexpensive supplement. Its difficulty checker pulls the live Google top 10 for your chosen location and calculates difficulty from the strength of those ranking pages. Keywords Everywhere

Best for: quickly checking lots of SERPs while researching in Google.

• search.google.com — Not really a keyword-discovery database, but essential for finding keywords you already have a foothold in. You can identify queries where you're getting lots of impressions but relatively few clicks, and queries where you're ranking around positions 5–20 that may respond well to content improvements. Google Help Google Help

Best for: uncovering your lowest-hanging fruit.

What I would use for “true” ranking difficulty

The important thing is that no third-party KD number is the true difficulty. Semrush explicitly describes KD as an estimate, and Ahrefs likewise says the final decision should involve detailed SERP analysis. Ahrefs Semrush

For each promising keyword, I would manually evaluate:

1. Who occupies the top 10?

Are they huge authoritative sites, or small niche sites?

2. How strong are the actual ranking pages?

Page-level backlinks matter much more than simply looking at the domain's overall authority.

3. Are there weak results?

Forums, Reddit threads, outdated articles, thin pages, poorly matched results, PDFs, etc. can be signs of an exploitable SERP.

4. Does the SERP actually match the intent?

If Google is ranking product pages but everyone is writing blog posts, for example, the keyword may be harder than the KD suggests.

5. Can you produce something substantially better?

Better coverage, firsthand experience, original data, tools/calculators, examples, etc.

6. How authoritative is your own site in this topic?

A KD 40 keyword might be trivial for an established topical authority and extremely difficult for a brand-new domain. Semrush's PKD is particularly interesting for this reason. Semrush

A practical stack

If I were starting a site today, I'd probably use:

Semrush or Ahrefs → Google Search Console → manual SERP analysis

And I'd prioritize keywords where multiple signals agree:

reasonable search demand + low/medium tool KD + weak page-level competitors + imperfect SERP intent + your site has topical authority

That's much more reliable than simply filtering for “KD < 20.”

If you tell me your niche/site type and whether the site is new or established, I can also give you a concrete keyword-difficulty workflow (including the exact metrics/thresholds I'd use in Ahrefs or Semrush).

Yes. The key distinction is that keyword difficulty (KD) is not the same thing as true ranking difficulty. Most tools calculate a useful proxy, but you get a much better answer by combining the score with an actual SERP analysis.

My top picks

• ahrefs.com — best for estimating ranking difficulty

• Its KD is heavily based on the referring domains of pages ranking in the top 10.
• The SERP overview lets you inspect the actual backlink strength of competing pages.
• Particularly useful if you want to answer: "How many links would I realistically need to compete?"
• Ahrefs itself recommends treating KD as a first filter and then doing detailed SERP analysis. Ahrefs Ahrefs
• semrush.com — best all-around option

• Excellent keyword discovery through Keyword Magic Tool.
• Its standard KD% estimates how difficult the top 10 will be.
• More interestingly, Personal Keyword Difficulty (PKD%) attempts to account for your specific site's ability to rank, rather than treating every domain equally. Semrush Semrush
• LowFruits — best for finding genuinely weak SERPs

• Rather than simply filtering by a generic KD number, its workflow focuses on finding keywords where weak/low-authority sites are already ranking.
• That's extremely useful for smaller sites because a SERP containing several mediocre sites can be a stronger opportunity than one with a nominally "KD 15" keyword dominated by huge domains.
• I'd consider it a particularly good complement to Ahrefs/Semrush rather than a replacement. Techcognate Backlink Management
• search.google.com — essential and free

• This isn't primarily a keyword-discovery tool, but it's one of the best sources of real, first-party evidence about what Google already thinks your site can rank for.
• Look for queries where you have substantial impressions but positions around 5–30. Those can be much easier wins than completely new keywords. Google specifically provides query, impression, click, CTR and position data. Google Help Google Help
• ads.google.com — useful free baseline

• Good for discovering demand and related terms.
• Don't use its "competition" metric as organic SEO difficulty: Google's competition metric is for paid advertising, not organic rankings. Ahrefs

The workflow I'd actually use

If your goal is "find keywords I have a realistic chance of ranking for", I'd use:

LowFruits → Ahrefs/Semrush → manual SERP analysis → Search Console

For each candidate keyword, I'd score the SERP on:

1. Weak domains ranking?

Are forums, small niche sites, personal blogs, or relatively low-authority domains in the top 10?

2. Weak pages ranking?

Are the ranking pages poorly targeted, thin, outdated, or only loosely relevant?

3. Backlinks required?

Look at referring domains to the top 3–10 pages. This is more informative than simply seeing "KD = 18."

4. Intent match?

Can you create exactly what Google appears to want? A low-KD keyword is useless if your proposed page doesn't match the SERP's intent.

5. SERP composition?

Watch for ads, shopping results, local packs, videos, featured snippets, AI results, Reddit/forums, etc. A keyword with 2,000 searches isn't necessarily attractive if organic results get very little of that traffic.

6. Your site's authority/topic relevance?

A keyword that's difficult for a new site may be relatively easy for an established site with strong topical authority.

A useful "true difficulty" heuristic

I'd think about it roughly like this:

True difficulty = SERP competition × backlink strength × intent match × site authority gap

The important part is that no single KD number captures all four. Even Ahrefs explicitly says its KD shouldn't be the sole criterion and recommends detailed SERP analysis. Ahrefs

If I had to choose only one

Ahrefs if your priority is accurately evaluating why a SERP is difficult.

LowFruits + Ahrefs if your priority is finding low-competition opportunities for a relatively small site.

Semrush if you want one broader SEO platform and particularly like the site-specific PKD metric.

And if you already have a site with meaningful traffic, Search Console is indispensable because you're no longer guessing about your site's ability to rank—you can see the queries Google is actually associating with your pages. Google Help

Yes. The key is to separate keyword discovery from actual ranking-difficulty validation. Most tools' KD scores are useful filters, but none is a reliable prediction of whether your page will rank.

My top picks

• ahrefs.com — best for serious SEO research.

Its Keyword Difficulty is primarily backlink-based, using referring domains to the top-ranking pages. More importantly, you can inspect the actual SERP and the competing pages rather than trusting the score alone. Ahrefs Ahrefs

• semrush.com — best all-around alternative.

Strong for discovering huge numbers of related keywords, competitor gaps, intent, SERP features, and difficulty. Its KD incorporates backlink and domain-authority signals from the top 10. Semrush

• lowfruits.io — particularly good for finding genuinely weak SERPs.

Instead of simply asking "What's the KD?", it focuses on finding search results where weaker/less-authoritative sites are already ranking. That's often much closer to what you actually want when you're trying to find opportunities for a smaller site. Techcognate

• search.google.com — essential and free if you already have a site.

It shows the queries Google is actually displaying your pages for, including impressions, clicks, CTR, and average position. Those "almost ranking" queries can be some of your lowest-effort opportunities. Google Help Google Help

• ads.google.com — useful as a free volume sanity check.

I wouldn't use its "competition" metric as organic SEO difficulty; that metric relates to paid search. Ahrefs

The workflow I'd actually use

If your goal is "find keywords that I can realistically rank for," I'd do this:

1. Generate thousands of candidates with Ahrefs or Semrush.
2. Filter for relatively low KD/competition.
3. Run promising terms through LowFruits to identify SERPs containing genuinely weak competitors.
4. Manually inspect the top 10. This is the critical step.
5. Look for SERPs where: - Several ranking pages have relatively few referring domains.
6. Small/niche sites are ranking.
7. The results don't perfectly satisfy the query.
8. Search intent is ambiguous or underserved.
9. Forums, Reddit, Quora, directories, or thin pages occupy multiple positions.
10. The top results aren't all dominant, highly authoritative brands.
11. Compare the SERP against your own site's authority and topical relevance.
12. After publishing, use Search Console to find queries where you're sitting around positions 5–30 and improve those pages first.

A better "true difficulty" model

I'd think of difficulty roughly like this:

Realistic Difficulty = SERP strength + backlink requirements + topical authority gap + intent mismatch + site authority gap

rather than:

Realistic Difficulty = KD score

For example, a keyword with KD 15 can still be difficult if Google is overwhelmingly rewarding huge authoritative sites with exactly the right content. Conversely, a KD 35 keyword can be surprisingly attainable if several weak sites are already ranking and the SERP has poor content.

Ahrefs itself explicitly recommends treating KD as a first filter and then doing detailed SERP analysis; it also notes that different tools calculate difficulty differently. Ahrefs Ahrefs

If I were building a lean stack

Free: Google Search Console + Google Keyword Planner + manual Google SERP analysis.

Solo blogger/small site: LowFruits + Google Search Console.

Serious SEO/content operation: Ahrefs or Semrush + Google Search Console, with LowFruits added specifically for finding weak SERPs.

If you tell me your niche, approximate site authority/age, and whether you're targeting the US or another country, I can also give you a concrete keyword-difficulty scoring framework (including the SERP signals I'd use to decide whether a keyword is actually winnable).

Yes. The big caveat is that “keyword difficulty” is only a proxy. The best way to estimate true ranking difficulty is to combine a keyword database with an actual SERP-level analysis. Ahrefs explicitly recommends using KD as a first filter and then analyzing the individual SERPs. Ahrefs Ahrefs

My recommended stack

• ahrefs.com — best overall for serious keyword research

• Excellent for discovering long-tail opportunities from competitors.
• Its KD metric is primarily based on referring domains to the top-ranking pages, which makes it useful as a link-competition proxy. Ahrefs
• The important part is the SERP overview: inspect the actual pages ranking, their backlinks, traffic, topical relevance, and authority.
• Best for: finding keywords where competitors rank with relatively weak backlink profiles.
• semrush.com — best all-in-one alternative

• Keyword Overview gives KD, volume, intent, SERP features, and the actual top 10 results. Semrush
• Its KD incorporates referring domains and domain-level authority signals rather than relying on volume alone. Semrush
• Best for: combining keyword research, competitor research, content research, and rank tracking.
• LowFruits — particularly good for finding genuinely winnable SERPs

• This is the one I'd add if your primary goal is “show me keywords where weak websites are already ranking.”
• Its approach emphasizes SERP weakness rather than simply assigning a low numerical KD. A 2026 comparison also identifies it specifically as a strong tool for winnable long-tail keywords. Techcognate
• Best for: newer/smaller sites trying to find holes in otherwise competitive SERPs.
• search.google.com — essential if you already have a site

• This isn't really a keyword-discovery database; it's your first-party reality check.
• It shows the actual queries generating impressions, clicks, CTR, and average position for your site. Google Help Google
• Particularly valuable for finding “striking distance” keywords where you're already ranking around positions 5–30.
• Those can be substantially easier than starting from zero.
• Google Keyword Planner — useful as a free volume sanity check

• Good for understanding broad demand, but don't confuse its “competition” metric with organic SEO difficulty. Ahrefs explicitly notes that Keyword Planner competition refers to paid search, not organic rankings. Ahrefs

How I'd estimate true ranking difficulty

Rather than saying:

“KD = 18, therefore easy.”

I'd score the SERP something like this:

The weak-site test is particularly powerful. If a query has a KD of 25 but positions 4, 7, and 9 are occupied by small sites with weak backlink profiles, I'd consider it much more attractive than a KD-10 query whose entire first page is dominated by authoritative sites.

Conversely, a low KD doesn't automatically make something easy. Ahrefs itself points out that search intent, site authority, backlinks, and other factors still matter. Ahrefs

A practical workflow

I'd use:

Ahrefs/Semrush → LowFruits → manual Google SERP → Search Console

1. Generate hundreds/thousands of keyword ideas in Ahrefs or Semrush.
2. Filter for relatively low KD.
3. Run the survivors through LowFruits to identify weak competitors actually ranking.
4. Manually inspect the first page of Google for your best candidates.
5. Give each keyword a personal 0–100 difficulty score based on the SERP rather than the tool's KD.
6. If you already have a site, check Search Console for related queries you're already getting impressions for. Google specifically recommends using query/page data and position trends to identify opportunities. Google Help
7. Prioritize keywords where commercial value × achievable ranking × traffic potential is high.

If I had to pick only two

Ahrefs + LowFruits would be my choice for finding low-competition opportunities.

If you're doing SEO at a larger scale, I'd go Semrush + Ahrefs, with manual SERP analysis as the final arbiter.

And if you tell me what kind of site/niche you're researching and roughly how authoritative/new the domain is, I can give you a concrete keyword-difficulty scoring framework (including thresholds for backlinks, DR/DA, SERP weakness, volume, and intent) rather than relying on the generic KD scores.

I'd use:

Yes. The key distinction is “keyword difficulty” vs. actual SERP difficulty. Most tools give you a useful proxy, but none can tell you with certainty how hard your specific site will find a keyword. Even Ahrefs explicitly recommends using KD as a filter and then doing SERP-level analysis. Ahrefs Ahrefs

My recommended stack

• ahrefs.com — best overall for serious keyword research

• Excellent for keyword discovery, competitor keyword gaps, backlinks, and SERP analysis.
• Its KD metric is primarily based on the referring domains of top-ranking pages, so it's particularly useful for estimating the link authority hurdle. Ahrefs
• A particularly useful trick: look for keywords where low-DR sites already rank in the top 5. Ahrefs specifically supports this type of filtering. Ahrefs
• My pick if you want one professional tool.
• semrush.com — best all-in-one alternative

• Strong keyword discovery, competitor research, SERP analysis, intent classification, and difficulty scoring.
• Its KD incorporates factors beyond backlinks, including the authority of ranking domains and link characteristics. Semrush
• Particularly good if you're doing content + competitor + SEO research in one platform.
• lowfruits.io — best specialist tool for genuinely weak SERPs

• This is the one I'd add if your primary objective is “find keywords where I can actually beat the existing results.”
• Instead of relying primarily on a single KD number, its workflow focuses on identifying weak domains/pages already ranking.
• This can uncover opportunities that generic “KD < 10” filters miss.
• search.google.com — best source for opportunities you already own

• Completely different from the tools above: it gives you first-party data from your actual Google performance.
• Look for queries where you're getting lots of impressions but ranking around positions 5–30. Those are often much easier wins than starting from scratch.
• Search Console lets you examine queries, pages, clicks, impressions, CTR and average position. Google Support Google Support
• ads.google.com — useful as a secondary volume check

• Good for validating whether there is meaningful search demand.
• Don't mistake its “competition” metric for organic SEO difficulty; Google Keyword Planner's competition refers to paid advertising. Ahrefs makes this distinction explicitly. Ahrefs

How I'd estimate “true” ranking difficulty

Rather than trusting a single KD score, I'd score each candidate on roughly five dimensions:

The actual SERP is the ground truth. Third-party difficulty numbers are estimates. Ahrefs itself notes that no tool can fully calculate ranking difficulty because Google's ranking system involves many factors. Ahrefs

A practical scoring system

For every promising keyword, I'd record:

Keyword → volume → KD → weakest Top-10 site → weakest Top-3 site → referring domains → intent → content quality → your site's authority

Then prioritize keywords where you see something like:

Moderate search demand + low/moderate KD + weak sites in Top 10 + weak backlinks + obvious content gap

That's much more predictive than simply filtering for “KD < 20.”

If I were starting today

I'd use:

Ahrefs → LowFruits → Google Search Console

Ahrefs finds the universe of opportunities, LowFruits helps identify SERPs that are actually vulnerable, and Search Console tells you where Google is already giving your site traction.

That combination is considerably better than relying on a keyword difficulty number alone. Ahrefs Google Support

If you tell me your site/niche and approximate authority/DR, I can also give you a concrete keyword-research workflow with thresholds for volume, KD, backlinks, and SERP weakness.

For finding low-competition keywords, I’d avoid relying on a single “keyword difficulty” number. Every SEO tool is estimating difficulty differently, and the best opportunities usually come from combining keyword discovery + SERP analysis + your own site’s authority. Ahrefs Semrush

Here are the tools I’d consider:

Best overall keyword research suites

Ahrefs

Best for: accurate SERP competitiveness analysis and competitor mining

Why it’s useful:

• Strong keyword discovery database
• Keyword Difficulty based heavily on backlink strength of ranking pages
• Lets you find: - keywords competitors rank for that you don’t
• pages getting traffic from weak SERPs
• topics where low-authority sites are already winning Ahrefs Ahrefs

Best workflow:

1. Enter competitor domains into Site Explorer
2. Export keywords where: - competitor ranks top 10
3. KD is low/moderate
4. traffic potential is meaningful
5. Manually inspect the SERP

Semrush

Best for: large-scale keyword discovery and intent analysis

Useful features:

• Keyword Magic Tool for generating thousands of ideas
• Keyword Difficulty scores
• SERP analysis
• Competitor gap reports Semrush

A good filter:

• Low KD
• Commercial or problem-solving intent
• Decent CPC
• Weak domains appearing in the top 10

Tools specifically built for finding “easy wins”

LowFruits

Best for: finding keywords where weak websites already rank

What makes it different:

• Looks for SERPs containing weaker competitors
• Good at uncovering long-tail queries
• Useful for niche sites and newer domains Low Fruits

I’d especially use it when:

• your domain has low authority
• you need realistic first-page targets
• you’re building topical authority from scratch

Mangools

Best for: simple keyword research without enterprise complexity

Good fit if you want:

• easy keyword difficulty scores
• quick SERP checks
• lower cost than Ahrefs/Semrush

Free / first-party options

search.google.com

Best for: finding keywords you’re already close to ranking for

Look for:

• positions 8–30
• impressions increasing
• queries where your page partially matches intent

These are often easier wins than chasing brand-new keywords.

ads.google.com

Best for:

• discovering related terms
• understanding advertiser interest

Caveat:

• It is designed for paid search; its “competition” metric is not the same as organic SEO difficulty.

How I estimate “true” ranking difficulty

After a tool gives you a promising keyword, I’d manually score the SERP:

Easier opportunities:

✅ Top 10 includes:

• forums
• Reddit threads
• small niche blogs
• outdated articles
• pages that barely answer the query
• low-authority domains

Harder opportunities:

❌ Top 10 dominated by:

• Wikipedia
• major publishers
• government sites
• huge brands
• pages with thousands of backlinks

Then check:

1. Search intent match

• Can you create something clearly better?
• Are ranking pages answering the exact question?
• Content gap

• Are current results missing examples, data, templates, comparisons, screenshots, etc.?
• Authority gap

• Compare your domain strength against ranking sites.
• SERP volatility

• If rankings constantly change, Google may not have a clear winner yet.

My preferred stack by situation

A practical shortcut: find keywords where the search volume looks modest but the SERP has weak pages ranking. Those often outperform higher-volume keywords because the ranking probability is much better. Ahrefs

Yes. The key is to not trust a single “keyword difficulty” number. Most tools calculate difficulty from some combination of backlinks, authority, and SERP data; they’re useful for filtering, but the actual difficulty is determined by what Google is rewarding for that query right now. www.semrush.comgatilab.com

My picks

LowFruits is particularly interesting for your specific goal: its core workflow is finding long-tail queries where weak sites are already ranking, rather than simply declaring a keyword “KD 18.” www.techcognate.com

How I'd estimate true ranking difficulty

I'd use a two-stage process:

1. Use a tool to discover candidates

For example:

• Search a broad seed in Ahrefs/Semrush.
• Filter toward lower KD.
• Look at competitor keyword gaps.
• Run promising terms through LowFruits.
• Pull your own existing opportunities from Search Console.

2. Manually inspect the SERP before committing

This is the part that most keyword research workflows miss.

For each candidate, examine the top 10 and ask:

• Are there small/niche sites ranking?
• Are there Reddit, Quora, forums, directories, or thin affiliate pages?
• Do the ranking pages actually satisfy the search intent?
• How many referring domains do the individual ranking pages have?
• Are the top results extremely authoritative brands?
• Is Google showing the same content format you intend to create?
• Are there SERP features/AI Overviews reducing organic clicks?
• Does the query have a clear, underserved intent?

A keyword with KD 35 and three weak pages in the top 10 can be considerably easier than one with KD 12 where every result is an extremely strong, highly relevant page.

Semrush's current KD, for example, incorporates referring domains, domain authority and other backlink signals, which explains why its score is useful but still isn't a complete representation of your site's particular ability to rank. www.semrush.com

My ideal stack

If I were building a site today:

Low budget:
Google Search Console + Google Keyword Planner + LowFruits

Serious content site:
Ahrefs + Google Search Console + LowFruits

Agency / large SEO operation:
Semrush + Google Search Console, with manual SERP analysis

The important combination is keyword discovery + first-party data + SERP inspection. Recent SEO-tool comparisons similarly recommend using multiple evidence types rather than treating volume or KD as definitive. www.semrush.comgatilab.com

If you tell me what kind of site/niche you're researching and roughly how authoritative the domain is, I can also give you a concrete “true keyword difficulty” scoring framework (e.g. a 0–100 score based on the top 10's backlinks, DR/DA, intent match, weak-site presence, and SERP features) that is more useful than blindly using Ahrefs/Semrush KD.

For finding low-competition keywords and estimating true ranking difficulty, I’d avoid relying on a single “KD” score. The best workflow combines keyword discovery, SERP analysis, backlink strength, and whether the current ranking pages are actually beatable.

Here are the tools I’d consider:

My preferred stack by situation

New site / low authority

Use:

1. LowFruits → find keywords with weak competitors
2. Ahrefs → verify backlinks of the top 10
3. Google Search Console → expand winners after publishing

Look for:

• Forums, Reddit pages, thin affiliate sites, outdated articles, or small blogs ranking in the top 10
• Multiple results with few referring domains
• Pages that don’t closely match search intent

Established site

Use:

1. Ahrefs or Semrush for competitor keyword gaps
2. SERP analysis manually
3. Prioritize keywords where your site’s authority is close to the ranking sites

How to estimate “true” difficulty (better than a KD score)

A keyword tool’s difficulty number is only a proxy. For each keyword, check:

1. Who ranks?

Good signs:

• Small niche sites ranking
• Individual articles outranking major brands
• Weak content quality
• Old pages with poor UX

Bad signs:

• Google dominated by Wikipedia, government sites, major publishers, or huge brands
• Search results all have thousands of backlinks

2. Page-level backlinks

Domain authority matters less than the specific ranking page.

Example:

• Keyword KD: 35
• Top results have 5–20 referring domains → potentially easy
• Keyword KD: 15
• Every result has 500+ referring domains → probably hard

Ahrefs specifically bases its KD around referring domains to top-ranking pages, while noting that KD alone does not capture all ranking factors. ahrefs.com

3. Search intent match

A low-KD keyword can still be difficult if Google wants a different type of page.

Example:

• Query: “best CRM for dentists”
• SERP filled with comparison pages
• You publish a general “what is CRM” article

You may lose even with strong SEO metrics.

4. Look for “weak SERPs”

My favorite signals:

• Top 10 contains pages with low Domain Rating/Authority
• Ranking pages have few backlinks
• Content is outdated
• The keyword is long-tail and specific
• Search results have mixed intent

A simple scoring model I like

Score each keyword 0–5:

Keywords scoring 18–25 are usually worth testing.

If you tell me your site age, niche, monthly traffic, and whether you’re targeting informational or buyer keywords, I can suggest a more specific keyword-research workflow and thresholds.

Yes. If your goal is finding keywords that are genuinely easier to rank for, rather than blindly sorting by a tool's “KD” score, I'd use a combination of tools.

My shortlist

For “true” ranking difficulty, don't trust KD alone

This is the important part. Keyword Difficulty is an estimate, not a Google metric. Different tools calculate it differently. Ahrefs, for example, primarily bases KD on referring domains to the top-ranking pages, while Semrush incorporates backlinks, domain authority, SERP features, volume, and other signals. help.ahrefs.comwww.semrush.com

I would therefore use KD as a filter, then manually evaluate the actual SERP.

For each promising keyword, look at:

1. Weak sites in the top 10 — forums, small niche sites, relatively new sites, etc.
2. Page-level authority — don't be intimidated by a huge domain if the ranking page itself has few quality links.
3. Referring domains — probably the most useful quantitative competitive signal.
4. Content mismatch — are the current results actually answering the query well?
5. Search intent — can you produce something substantially better/more relevant?
6. SERP composition — Reddit, Quora, forums, UGC, thin pages, outdated articles, etc. can indicate opportunity.
7. Traffic potential — search volume can be misleading if the SERP's #1 page captures traffic from dozens of related queries. Ahrefs' Traffic Potential metric is useful here. ahrefs.com
8. Your site's authority — “KD 20” isn't equally easy for a brand-new site and an established site.

Ahrefs itself recommends using KD as a first filter and then doing detailed SERP analysis rather than treating the score as definitive. ahrefs.com

The workflow I'd recommend

If I were doing serious keyword research today:

Ahrefs → LowFruits → manual SERP analysis → Google Search Console

• Ahrefs: Generate a huge universe of long-tail keywords. Filter by volume, KD, traffic potential, and intent.
• LowFruits: Look for SERPs where smaller/less-authoritative sites are already winning. This is often a better indication of actual accessibility than a generic KD number.
• Manual SERP: Inspect the top 10 and record the weakest competitors, referring domains, content quality, intent match, and SERP features.
• Search Console: Once you have a site with existing impressions, mine queries where you're sitting around positions 8–30. Those can be dramatically easier wins because Google already considers your site relevant.

One metric I'd build myself

If you want something closer to “Can my site realistically rank?”, I'd create a simple opportunity score rather than relying on KD:

Opportunity = relevance × SERP weakness × traffic potential × site authority fit

In practice, I'd weight the weakest 3–5 ranking pages more heavily than the strongest #1 result. A SERP with one monster site followed by nine weak pages can be a much better opportunity than a SERP where all ten results are strong.

That's also why I wouldn't automatically choose the keyword with the lowest KD. Semrush's current KD, for example, incorporates numerous SERP characteristics beyond backlinks, while Ahrefs deliberately keeps its KD more focused on linking domains. www.semrush.com

If you tell me your niche/site type and roughly how authoritative the site is (new site, established site, DR/DA, etc.), I can give you a concrete keyword-research stack and a scoring formula for identifying genuinely low-competition keywords.

Yes. The key is to separate keyword discovery from actual ranking-difficulty analysis. No single KD score tells you whether your site can rank; Google uses many signals, and even Ahrefs explicitly recommends manual SERP analysis beyond its KD metric. ahrefs.com

My picks

For "true" ranking difficulty, I'd use this process

1. Use Ahrefs/Semrush/LowFruits to generate candidates.

Don't just filter for something like KD <20. Instead, look for:

• reasonable search volume
• specific long-tail intent
• low/medium KD
• weak domains in the top 10
• pages with relatively few referring domains
• forums, Reddit, Quora, Pinterest, etc. appearing prominently
• outdated or thin content
• results that don't precisely satisfy the search intent

Ahrefs is particularly useful here because its SERP overview exposes backlink and traffic metrics for the ranking pages, while its "lowest DR" functionality can help identify keywords where weaker sites are succeeding. ahrefs.com

2. Manually inspect the actual SERP.

This is the step that most "keyword difficulty" workflows miss.

For each promising keyword, ask:

Could a genuinely better page from a site like mine beat at least 2–4 of the current top 10?

Look at:

• Domain authority/DR of ranking sites
• Referring domains to individual ranking pages
• Content depth and freshness
• Search intent match
• Topical authority
• Brand dominance
• Exactness of the answer
• SERP features
• Whether the ranking pages are actually good

A keyword with KD 35 but three weak pages in the top 10 can be much easier than one with **KD 12 where every result comes from a highly authoritative site.

3. Add a "weak SERP" score of your own.

I'd actually create a simple spreadsheet score:

Opportunity = Intent fit × SERP weakness × Traffic potential ÷ Site-authority gap

You don't need mathematical precision. The goal is to stop treating a third-party KD number as ground truth.

One especially powerful technique

If you already have a website, Google Search Console is arguably your best source of low-competition keywords because you're measuring your site's actual ability to appear, rather than estimating it from a third-party model.

Look for queries where you have:

• 1,000+ impressions
• average position 8–30
• decent relevance
• relatively low CTR
• a page that already ranks for the query

Then improve the existing page rather than starting from zero. Search Console lets you drill from a query into the pages Google is actually showing for it. support.google.com

If I were building an SEO stack

Budget:
Google Search Console + LowFruits

Serious solo SEO:
Ahrefs + Google Search Console

Agency/content operation:
Semrush + Google Search Console + Keyword Insights

My personal preference for your specific goal: Ahrefs + LowFruits + Search Console. Ahrefs gives you the broad discovery/backlink/SERP intelligence, LowFruits helps surface genuinely weak SERPs, and Search Console provides first-party evidence about what your own site can already rank for.

The important distinction is: "low KD" ≠ "easy for me to rank." The closest practical approximation to true difficulty is SERP-level weakness relative to your site's existing authority and topical relevance. ahrefs.comahrefs.com

Yes. The key is to separate “keyword difficulty” from actual ranking difficulty. Most tools give you a useful first-pass score, but none can perfectly predict whether your page can rank. Even Ahrefs explicitly recommends using KD as a filter and then doing SERP-level analysis. ahrefs.com

My picks

If your goal is specifically “low competition”

I'd use LowFruits + Ahrefs rather than trusting a single KD number.

Why? Suppose a keyword has:

• Ahrefs KD: 12
• Semrush KD: 18
• 3 of the top 10 results have very few referring domains
• 2 results are small niche sites
• Several results don't answer the query particularly well
• No dominant brand owns the SERP
• Search intent is a very close match for your proposed article

That's much more interesting than simply seeing “KD 12.”

Ahrefs' KD is primarily based on referring domains to the top-ranking pages, while Semrush incorporates several SERP and authority signals. Consequently, their numbers can legitimately disagree. ahrefs.comwww.semrush.com

My “true difficulty” workflow

For each promising keyword, I'd score these five things manually:

1. SERP weakness — most important

Look at the actual top 10.

Ask:

• Are there forums/Reddit/Quora results?
• Are there tiny niche sites?
• Are there pages with very few backlinks?
• Are there obviously outdated pages?
• Are some results only tangentially relevant?
• Are titles poorly optimized?
• Is Google struggling to find exactly what the searcher wants?

A SERP with several mediocre pages can be much easier than a SERP where every result is a perfectly optimized article from a DR/DA-80+ site.

2. Page-level authority

Don't just look at the domain's authority. Look at the specific ranking URL's backlinks/referring domains.

A giant site isn't necessarily difficult to beat if the individual ranking page has little link equity.

3. Search intent

This is massively underrated.

If the top results are mostly:

“Best X for Y”

and you want to publish:

“Complete guide to X”

you're fighting the SERP's intent even if the keyword has a low KD.

Ahrefs itself notes that KD shouldn't be the sole decision criterion and recommends detailed SERP analysis. ahrefs.com

4. Your site's authority

“KD 30” means very different things for a brand-new site versus a site with hundreds of quality referring domains.

So I'd create your own thresholds rather than blindly accepting a tool's:

KD < 30 = easy

Semrush, for example, explicitly says what constitutes a “good” KD depends on the authority of your own site. ahrefs.comwww.semrush.com

5. SERP click potential

A keyword can be easy to rank for but worthless.

Check whether the SERP is dominated by:

• ads
• AI Overviews
• featured snippets
• shopping results
• maps
• videos
• Google's own answers

Semrush now includes AI Overview information in its keyword data because SERP composition can affect the traffic you actually receive. ahrefs.comwww.semrush.com

One tool I wouldn't overlook

Google Search Console is probably the best “keyword difficulty” tool you already have.

Once your site has some traffic, look for queries where you're already getting impressions at positions ~8–30. Those are validated opportunities: Google already considers your page relevant enough to show it.

You can inspect the queries, pages, impressions, CTR and average position directly in Search Console. support.google.com

For example:

2,000 impressions → position 17 → 2 clicks

can be a better content opportunity than:

20,000 estimated searches → KD 8 → you're nowhere in the SERP.

The first has evidence that Google already likes your site for the topic.

What I'd actually buy

If you're a solo SEO/content publisher:
LowFruits + Search Console is a very compelling combination.

If you're doing serious SEO/competitor research:
Ahrefs is my first choice.

If SEO is part of a broader marketing operation:
Semrush makes more sense because of its wider competitive/PPC/content ecosystem.

If you want the most reliable process rather than the “best” tool:
Use any major keyword database → filter for low KD → manually inspect the SERP → compare page-level authority → validate against your site's existing Search Console data.

That last step is what turns keyword difficulty into a much better estimate of your actual ranking difficulty.

For uncovering low-competition keywords and estimating true ranking difficulty, I’d avoid relying on a single “KD score.” The best workflow combines keyword discovery + SERP analysis + your site’s actual authority. Keyword difficulty metrics are third-party estimates, and different tools calculate them differently. ahrefs.com

Here are the tools I’d consider:

My preferred workflow for finding “hidden” easy keywords

1. Start with competitor keyword gaps

Use Ahrefs or Semrush:

• Enter 5–10 sites similar to yours.
• Export keywords where they rank in positions 5–30.
• Filter for:
  • decent search volume
  • low KD
  • high business relevance

These are often easier than starting from scratch because you know Google already accepts that type of content. ahrefs.comahrefs.com

2. Don’t trust KD alone — inspect the SERP

For every promising keyword, manually check:

Good signs:

• Top 10 results include forums, small blogs, outdated pages, or thin content
• Ranking pages have few referring domains
• Search intent is unclear or underserved
• No dominant brands occupy the entire page

Bad signs:

• Top results are mostly:
  • Wikipedia
  • government sites
  • major publishers
  • huge brands
  • pages with thousands of backlinks

Ahrefs specifically notes that KD is only a proxy and that SERP analysis is still necessary. ahrefs.com

3. Look for “low-volume, high-intent” keywords

Many easy wins are not high-volume terms.

Examples:

Hard:

project management software

Easier:

project management software for architecture firms

Even easier:

project management software for small architecture firms with invoicing

The search volume is lower, but the conversion potential is often much higher.

4. Use a simple difficulty scoring model

I’d create your own score:

Ranking Difficulty Score (0–100)

• +30 if top 10 domains are extremely authoritative
• +25 if most pages have strong backlinks
• +20 if search intent is dominated by brands
• +15 if content quality is already excellent
• +10 if SERP features reduce clicks

Then compare against:

Opportunity Score

• +30 commercial intent
• +25 keyword relevance
• +25 realistic traffic potential
• +20 content gap

This often beats blindly chasing KD numbers.

If I had to pick a stack

New site / small business

• Google Search Console
• LowFruits
• Keywords Everywhere

Growing content site

• Ahrefs + Google Search Console

Agency / advanced SEO

• Semrush + Ahrefs + manual SERP review

The biggest “secret” is usually not finding keywords with the lowest KD — it’s finding keywords where the current ranking pages are weaker than your planned page can become.

Yes. The key is to not trust a single “KD” number. True ranking difficulty is closer to “How hard would it be for a site like mine to beat the current SERP?”

My top picks

If I had to choose just two

Ahrefs + LowFruits is a particularly good combination for a smaller site.

Ahrefs' KD is primarily based on the backlink strength of the top-ranking pages. That's useful, but it doesn't fully capture whether the SERP itself is weak. ahrefs.comwww.semrush.com

LowFruits takes a different approach: look for weak domains/pages actually ranking in the SERP. That's often more actionable than seeing “KD 18” and assuming the keyword is easy.

Semrush is especially interesting if you want a more site-specific assessment: its Personal Keyword Difficulty (PKD) attempts to estimate difficulty for your particular domain, rather than treating every site equally. www.semrush.comwww.semrush.com

How I would estimate “true” difficulty

For every promising keyword, I'd score these five things:

1. Weak sites in the top 10

Are forums, small niche sites, low-authority blogs, Reddit, etc. ranking? That's a very good sign.

2. Page-level backlinks

Don't just look at the domain's DR/Authority Score. Check how many referring domains point specifically to the ranking URLs. Ahrefs emphasizes this distinction, and its SERP tool exposes URL-level metrics. ahrefs.com

3. Intent match

Can you create something that matches the intent better than the current results? A low-KD keyword can still be difficult if your content doesn't satisfy what Google expects. ahrefs.com

4. SERP quality

If the top results are mediocre, outdated, thin, or don't directly answer the query, that's a much stronger opportunity than KD alone suggests.

5. Your site's existing authority/topical relevance

A keyword with KD 40 could be easy for an established site in that niche and extremely difficult for a brand-new domain. Semrush explicitly accounts for this with PKD. www.semrush.comwww.semrush.com

A simple “real difficulty” rule

I'd classify a keyword as a high-confidence opportunity when:

Low/medium tool KD + at least 2–3 weak SERP competitors + relatively few backlinks to those pages + strong intent match + your site is topically relevant.

Conversely, I'd avoid a keyword where the tool says KD 15 but the entire first page consists of highly authoritative sites with heavily linked pages.

One important distinction: “keyword difficulty” is not an official Google metric. Every SEO platform calculates it differently, which is why two tools can give dramatically different numbers. ahrefs.comwww.semrush.com

If you're doing this for a new/small site, my practical workflow would be GSC → Ahrefs/SEMrush for keyword expansion → LowFruits for weak-SERP discovery → manual SERP analysis before publishing.

For uncovering low-competition keywords and estimating true ranking difficulty, I’d avoid relying on a single “KD” (keyword difficulty) number. The best workflows combine:

1. Keyword discovery (find opportunities)
2. SERP analysis (see who actually ranks)
3. Site-strength comparison (judge whether you can compete)

Here are the tools I’d consider:

My preferred workflow for “true” difficulty

1. Start with broad discovery

Use Ahrefs, Semrush, or LowFruits to collect hundreds/thousands of candidates.

Filter for:

• Low-to-medium difficulty
• Clear search intent
• Commercial value (if monetization matters)
• Long-tail modifiers

Examples:

• “best accounting software” → competitive
• “best accounting software for freelance photographers” → much more realistic

2. Ignore KD temporarily and inspect the SERP

A keyword with KD 15 can still be impossible if Google only shows huge brands.

Look at the top 10 results:

Good signs:

• Forums ranking
• Small niche sites ranking
• Pages with weak content
• Few backlinks
• Old/outdated articles
• Poorly matched search intent

Bad signs:

• Wikipedia
• Government sites
• Major publishers
• Dominant brands
• Pages with hundreds of referring domains

This is why tools like LowFruits are useful: they focus on identifying “weak spots” in the SERP rather than only assigning a score. lowfruits.io

3. Compare against your own authority

The same keyword can be easy or impossible depending on your site.

A rough rule:

New site

• Target: very specific long-tail queries
• Look for weak SERPs
• Avoid brand-dominated results

Established niche site

• Target: moderate difficulty keywords
• Compete where you have topical authority

Strong domain

• Go after higher-volume terms

Metrics I’d actually pay attention to

More useful than KD alone:

Ahrefs itself notes that keyword difficulty scores are estimates and that manual SERP review is still necessary because each keyword has unique competitive conditions. ahrefs.com

My recommended stacks

Budget / solo site

• Google Search Console (free)
• LowFruits
• Keyword Insights
• Google autocomplete + People Also Ask

Growing content site

• Ahrefs + Google Search Console
• Add LowFruits for finding easier wins

Agency / professional SEO

• Semrush + Ahrefs
• Screaming Frog for technical audits
• Search Console for first-party data

If your goal is specifically finding keywords a new or low-authority site can rank for, I’d put LowFruits + Ahrefs + manual SERP review ahead of relying on any single KD score.

Yes. The key is to separate “keyword difficulty” from “actual SERP difficulty.” Most tools give you a useful proxy, but none can perfectly predict whether your specific site will rank.

My top picks

If your goal is specifically “find keywords I can actually rank for”

I'd use Ahrefs + LowFruits, rather than relying on KD alone.

Ahrefs' KD is primarily based on the backlink strength of the top-ranking pages. Its own documentation says KD doesn't incorporate on-page factors. ahrefs.com

Semrush similarly incorporates backlink and domain-authority signals into its difficulty calculation. www.semrush.com

That's useful—but here's the problem:

A keyword with KD 15 isn't necessarily easier than one with KD 30.

For a better estimate, inspect the actual SERP.

My “true difficulty” test

For each promising keyword, I'd score the first page on:

1. Weak competitors

• Are small/niche sites ranking?
• Are there pages with low domain authority?
• Are individual articles ranking despite the site being relatively weak?

This is where LowFruits is particularly useful: it explicitly flags low-authority domains ranking in the top 10. lowfruits.iolowfruits.io

2. Content quality

• Are the current results actually comprehensive?
• Do they answer the query directly?
• Are there outdated/thin/poorly structured pages?

3. Search-intent match

• Does Google want a guide, product page, comparison, calculator, listicle, etc.?
• Can you create something that matches the intent substantially better?

4. Backlinks

• How many referring domains do the individual ranking pages have?
• Are they actually authoritative links, or hundreds of mediocre ones?

5. Site-level authority

• Are the results dominated by Wikipedia, Reddit, Amazon, major publishers, government sites, etc.?
• Or are independent niche sites routinely getting into the top 10?

6. SERP composition

• Featured snippets
• AI/search overviews
• Reddit/forums
• Video
• Shopping results
• Local pack
• Other SERP features

A keyword can have modest SEO difficulty but poor traffic opportunity if Google answers most of the query directly in the SERP.

A useful scoring system

Instead of saying:

KD = 18 → easy

I'd create an opportunity score:

Opportunity = Demand × Intent × SERP Weakness × Site Fit

For example:

That's considerably more useful than blindly filtering for KD <20.

One particularly powerful Ahrefs workflow

In Ahrefs Keywords Explorer, look for keywords where low-DR sites are already ranking near the top. Ahrefs specifically supports a Lowest DR filter for finding keywords where less-authoritative websites rank in the top results. ahrefs.com

That gives you a much better signal:

“Google is willing to rank a relatively weak site here.”

That's much closer to true ranking difficulty than a generic KD number.

What I'd choose by budget

Free:
Google Search Console + Google Keyword Planner + manual Google SERP analysis.

~$20–50/month:
LowFruits is particularly attractive if your primary objective is finding underserved/low-competition queries.

Serious SEO:
Ahrefs. Its combination of keyword discovery, SERP analysis, backlinks, and Traffic Potential makes it my first choice.

Agency/competitor-heavy work:
Semrush is excellent if you also want extensive competitor and keyword-gap research.

Best practical combination:
Ahrefs → discover keywords → LowFruits → validate weak SERPs → manually inspect top 10 → GSC → prioritize.

The important distinction is that keyword difficulty estimates the competition; the SERP tells you whether the competition is actually beatable.

Yes. If your goal is “find keywords that look easy in a database but are actually winnable in Google”, I’d use a combination rather than trusting any single KD score.

My top picks

The important part: don't trust KD blindly

A keyword's true ranking difficulty isn't the number next to “KD.” It's the characteristics of the actual SERP.

For a candidate keyword, I'd manually inspect the top 10 and score:

1. Domain strength — Are the ranking domains genuinely authoritative?
2. Page strength — Does each ranking page have lots of relevant backlinks?
3. Search intent — Do the current results actually satisfy the query?
4. Exact topical match — Are there pages specifically built around the query?
5. Content quality — Are the results comprehensive, current and useful?
6. Weak results — Forums, Reddit threads, thin affiliate pages, outdated articles, small niche sites, etc.
7. SERP volatility — Are rankings dominated by the same entrenched sites, or do newer pages break into the top 10?
8. Your own authority — A KD score isn't equally difficult for a DR/DA-10 site and a DR/DA-70 site.

That's why I particularly like LowFruits + Ahrefs/Semrush + manual SERP inspection.

A workflow I'd actually use

Step 1 — Generate a huge candidate set

Use Ahrefs or Semrush to pull:

• long-tail keywords
• competitor keywords
• question keywords
• related terms
• low-volume terms
• keywords where competitors rank in positions 5–30

Don't eliminate low-volume keywords too aggressively.

Step 2 — Find “weak SERPs”

Run the candidates through LowFruits or inspect the SERPs yourself.

A keyword with 800 searches/month + mediocre SERP competition can be much more valuable than one with 10,000 searches/month where every result is an extremely authoritative site.

Step 3 — Validate demand

Use Keyword Planner as another data point. Google says it provides monthly-search estimates and keyword suggestions, though these are estimates rather than guarantees of organic traffic. support.google.com

Step 4 — Use GSC to find your easiest wins

This is the underused part.

Look for queries where you already have:

• lots of impressions
• positions ~5–20
• reasonable CTR potential
• strong topical relevance to an existing page

Those are often far easier wins than starting from zero. Search Console lets you examine the queries generating impressions/clicks and filter the data. support.google.com

Step 5 — Calculate your own difficulty

I'd make a simple score rather than relying on KD:

Opportunity = Relevance × Demand × SERP Weakness × Site Fit

For example, a keyword might have a mediocre third-party KD of 35, but if 4 of the top 10 results are weak pages and your site already has topical authority, I'd potentially prioritize it over a KD-15 keyword whose SERP is packed with exceptionally strong competitors.

If I had to pick just three

Best serious setup:
Ahrefs + LowFruits + Google Search Console

Best alternative:
Semrush + LowFruits + Google Search Console

Budget-conscious setup:
Google Search Console + Keyword Planner + a lower-cost keyword tool, then manually inspect the SERPs.

The key insight is that “keyword difficulty” and “ranking difficulty for your particular site” are two different things. The latter is what you really want to estimate.

Yes. If your goal is finding keywords that look easy and actually are easy for your specific site, I’d avoid relying on a single “KD” number.

My shortlist

1. Ahrefs — best for “true” difficulty

Ahrefs' KD is primarily based on the referring domains pointing to the top-ranking pages, rather than simply looking at domain-level authority. ahrefs.comhelp.ahrefs.com

The important part is to go beyond the KD number and inspect the actual SERP:

• How many referring domains do the top 10 pages have?
• Are there pages with 0–10 referring domains?
• Are the ranking domains authoritative, or are relatively small sites ranking?
• Is the content mediocre/outdated?
• Does the SERP actually match the search intent?
• Are forums, Reddit, Quora, thin affiliate pages, etc. ranking?

That's much closer to real ranking difficulty than a single 0–100 score. Ahrefs itself says KD should be treated as a first filter rather than the sole decision metric. ahrefs.comhelp.ahrefs.com

2. LowFruits — best for finding weak SERPs

If your primary objective is “show me keywords where relatively weak websites are already ranking”, I'd seriously consider LowFruits.

It's particularly useful for discovering long-tail opportunities where conventional tools can give you a deceptively high difficulty score. Current SEO practitioners also commonly mention it specifically for low-competition discovery. www.reddit.com

3. Semrush — best for competitor mining

Semrush is particularly useful when you already have competitors and want to uncover:

Competitor ranks → keywords they get traffic from → keywords you're missing → filter by volume/difficulty/intention.

I'd use it more for discovery and Ahrefs more for SERP/backlink validation.

4. Google Search Console — the underrated one

For an existing site, GSC can reveal opportunities that third-party keyword databases can't.

Look for queries where you're already getting:

• impressions but few clicks
• average position ~8–30
• decent impressions
• strong relevance to a page you already have

Those are often much easier wins than starting from scratch because Google is already testing your page for the query.

The workflow I'd actually use

Rather than:

Volume → KD → publish

I'd use:

1. Generate candidates
Ahrefs + Semrush + LowFruits + competitor sites.

2. Filter for demand
Remove keywords with negligible impressions/search volume unless they're commercially valuable.

3. Check the SERP manually
This is the crucial step.

I'd score the top 10 on:

• Weak backlinks: 0–10 referring domains
• Weak sites: smaller/less authoritative domains ranking
• Poor content: doesn't fully answer the query
• Intent mismatch: Google is ranking pages that aren't quite what the searcher wants
• Freshness gap: old/outdated results
• Forum/UGC results: often a sign of an underserved query
• Exact topical match: whether the current results actually satisfy the query

4. Compare against your own site

A keyword with KD 25 isn't necessarily easy for you. Conversely, a KD 40 keyword can sometimes be very attainable if your site is already competitive in that topic.

5. Prioritize by “ranking opportunity,” not KD

I'd essentially use:

Opportunity = demand × business value × SERP weakness × topical authority ÷ effort

That's a much better model than blindly targeting “KD < 20.”

If I could only pay for one

Ahrefs. Its combination of keyword discovery, SERP analysis, backlink data, and competitor research makes it the strongest all-around choice. Its KD is specifically tied to the backlink strength of ranking pages, which makes the underlying data useful even when you don't take the headline score literally. ahrefs.com

If you're on a tight budget

Google Search Console + LowFruits + manual SERP analysis is a surprisingly strong combination.

If you tell me your niche/site type and roughly how authoritative the site is (new site, DR/DA ~10, 30, 50+, etc.), I can also give you a concrete keyword-difficulty scoring framework—including what I would consider an “easy” SERP versus a false-positive low-KD keyword.

For uncovering low-competition keywords and estimating true ranking difficulty, the best approach is to combine keyword databases (search volume, SERP data) with tools that help you analyze who actually ranks and why. No single “difficulty score” is perfectly reliable.

Here are the strongest options by use case:

Best all-around SEO suites

Ahrefs

Best for: finding overlooked keywords + analyzing SERP competition

Strengths:

• Huge keyword database
• “Keyword Explorer” shows keyword difficulty (KD), parent topics, traffic potential, and SERP overview
• Excellent for finding:
  • low-KD keywords with meaningful traffic
  • long-tail variations
  • competitor keywords you don’t rank for
• Strong backlink analysis to judge whether competitors are beatable

How to use it for true difficulty:

1. Filter keywords by low KD (e.g., KD < 20)
2. Open the SERP results
3. Check:
   • number/quality of referring domains to top pages
   • whether ranking pages are narrowly optimized
   • whether forums, weak sites, or outdated pages rank

Semrush

Best for: competitive research and keyword gap discovery

Strengths:

• Keyword Magic Tool is excellent for generating thousands of variations
• Keyword Difficulty score
• Competitor keyword gap analysis
• SERP feature tracking

Useful workflows:

• Find keywords competitors rank for but you don’t
• Filter by:
  • low difficulty
  • commercial intent
  • specific modifiers (“best,” “alternative,” “near me,” “for small business,” etc.)

Moz Pro

Best for: simpler difficulty analysis

Strengths:

• Keyword Difficulty metric is easy to understand
• Good SERP authority metrics
• Useful for smaller teams that don’t need enterprise-level data

Lower-cost tools focused on finding easy wins

LowFruits

Best for: finding keywords where weak pages rank

A strong tool for discovering “real” opportunities:

• Identifies SERPs with:
  • forums ranking
  • low-authority domains
  • thin content
  • poorly optimized pages

This often reveals easier opportunities than relying only on KD scores.

Mangools KWFinder

Best for: beginners and smaller sites

Strengths:

• Simple keyword discovery
• SERP preview
• Difficulty scoring
• Affordable compared with Ahrefs/Semrush

Keyword Insights

Best for: clustering large keyword lists

Useful when you already have thousands of ideas:

• groups keywords by search intent
• identifies pages you should create
• helps avoid cannibalizing similar terms

Tools for discovering hidden opportunities

Google Search Console

Best free tool for existing sites

Look for:

• keywords ranking positions 5–20
• pages getting impressions but few clicks
• queries where Google already associates your site with a topic

These are often the easiest ranking improvements.

AnswerThePublic

Best for question-based long tails

Good for finding:

• “how to…”
• “why does…”
• “best way to…”
• comparison searches

Pair it with a difficulty tool afterward.

AlsoAsked

Best for discovering related questions from Google’s “People also ask” data

Useful for:

• FAQ sections
• topical authority planning
• informational content clusters

How to estimate true ranking difficulty (better than a tool score)

Keyword difficulty metrics are mostly proxies. A more accurate manual check:

1. Analyze the top 10 results

Look for:

Easier SERPs

• Reddit, Quora, Pinterest, forums ranking
• outdated articles
• thin content
• pages not directly targeting the query
• small sites ranking

Harder SERPs

• strong brands dominate
• every result has exact-match optimization
• many pages have hundreds/thousands of backlinks
• search intent is dominated by authoritative sites

2. Check “authority mismatch”

A great opportunity looks like:

A low-authority site ranks #3 because the topic is underserved.

A difficult keyword looks like:

Only major brands rank, and every result has strong topical authority.

3. Look beyond search volume

A keyword with:

• 150 searches/month
• weak competition
• high buyer intent

can outperform:

• 10,000 searches/month
• impossible competition

A practical tool stack by budget

Free / lean setup

• Google Search Console
• Google Keyword Planner
• Google Trends
• AlsoAsked
• Manual SERP analysis

Small site / affiliate / niche site

• LowFruits
• Mangools
• Search Console

Serious SEO growth

• Ahrefs or Semrush
• LowFruits
• Keyword Insights
• Search Console

Enterprise/content teams

• Semrush
• Ahrefs
• Keyword Insights
• Screaming Frog SEO Spider

If your goal is building a new site from zero, I’d prioritize SERP weakness analysis (LowFruits/Ahrefs) over raw keyword volume. If you already have a site with some authority, Search Console + keyword gap tools usually produce faster wins.

Absolutely. The best stack depends on whether you want keyword discovery, SERP-level difficulty analysis, or both.

Yes. If your goal is finding genuinely under-served keywords—not just sorting by a “KD” number—I’d use a combination of a large keyword database + SERP-level analysis.

My top picks

The important distinction: KD ≠ true difficulty

I'd treat every tool's difficulty score as a screening metric, not the final answer.

For example, Ahrefs' KD is primarily based on the referring domains of the top-ranking pages. Ahrefs itself says it doesn't account for on-page factors. help.ahrefs.comahrefs.com

Semrush goes further: its standard KD incorporates backlink and domain-strength signals plus SERP features, while its Personal Keyword Difficulty attempts to estimate difficulty specifically for your domain. www.semrush.comwww.semrush.com

But the best indication of actual difficulty is still:

Who is ranking + why are they ranking + how well do they satisfy the query?

My preferred workflow

1. Generate candidates with Ahrefs or Semrush

Don't just search for obvious keywords. Look at:

• long-tail variations
• questions
• modifiers
• comparison terms
• use-case searches
• “alternative to…”
• “for [specific audience]”
• “without [constraint]”
• newer terminology

Ahrefs' Search Suggestions and related-keyword reports are particularly useful for expanding beyond your initial seed. ahrefs.com

2. Filter aggressively

For example, start with:

reasonable search volume + low/moderate KD + relevant intent

But don't automatically reject something because KD is 40 or 50. A mediocre-looking KD can conceal a very beatable SERP.

3. Manually inspect the top 10

This is the part I'd call true ranking difficulty.

For each promising keyword, look for:

• Several results with relatively few referring domains
• Forums/Reddit/Quora ranking
• Small or niche websites ranking
• Pages that don't directly answer the query
• Old/outdated content
• Thin or poorly structured articles
• Results targeting a broader query rather than the exact intent
• Multiple pages ranking despite having weak backlink profiles
• SERPs where Google appears uncertain about the best answer

Ahrefs explicitly recommends looking for these kinds of “cracks” because aggregate KD can hide individual weaknesses in the SERP. help.ahrefs.comahrefs.com

4. Use LowFruits when you want to automate this

This is where LowFruits stands out. Its SERP Analyzer checks the top 10, identifies potentially weak websites, checks whether pages actually target the query, and reports competition characteristics. It specifically recommends looking for weak sites and intent mismatches rather than relying solely on conventional authority metrics. lowfruits.io

If I were building a stack

Best paid stack:
Ahrefs + LowFruits

Ahrefs gives you the breadth and backlink/traffic data; LowFruits helps you spot SERPs where the actual competition is weaker than the headline KD suggests.

Alternative:
Semrush + LowFruits

I'd favor this if the Personal Keyword Difficulty feature is particularly useful for your site, because Semrush attempts to make the difficulty estimate domain-specific. www.semrush.comwww.semrush.com

Budget approach:
Google Search Console + Google autocomplete/related searches + a lightweight keyword tool, then manually inspect SERPs.

A useful scoring system

Rather than saying:

“KD = 18, therefore easy.”

I'd build a simple Opportunity Score from:

Opportunity = Demand × Relevance × SERP Weakness × Business Value

And score SERP weakness based on things like:

• 0–2 weak pages → hard
• 3–4 weak pages → promising
• 5+ weak pages → potentially excellent
• Exact-intent mismatch → strong positive
• Forums/UGC dominating → potentially exploitable
• Several low-authority sites in top 10 → strong positive
• Top 10 dominated by highly authoritative, highly relevant pages → strong negative

That tends to produce a much more realistic picture than blindly filtering for KD < 20.

If you tell me your niche/site and roughly how authoritative the site is, I can also give you a concrete keyword-research workflow and the exact filters I'd use to uncover low-competition terms.

If your goal is to find keywords that are realistically rankable—not just those with a low "difficulty" score—you'll usually get better results by combining a few different types of tools. Most SEO difficulty metrics are proprietary and often disagree with each other, so it's useful to validate opportunities from multiple angles.

Here's a breakdown of the strongest options.

My favorite combination

If I were optimizing for organic SEO today:

• Ahrefs for backlink analysis and SERP inspection
• LowFruits to uncover keywords where weak sites already rank
• Google Search Console (for existing sites) to find near-ranking opportunities
• Keyword Insights to group keywords into topical clusters

That combination is much better than relying on a single keyword difficulty number.

How to estimate "true" ranking difficulty

The keyword difficulty score is only part of the picture. I usually score a keyword using these factors:

1. Domain authority of the top 10

Look for:

• Small blogs
• Niche websites
• Forums
• Reddit
• Quora
• Sites with Domain Rating under ~30

If several results come from relatively modest sites, that's often a good sign.

2. Search intent consistency

Ask:

• Are all results solving the same problem?
• Could you create something significantly better?

Mixed intent often creates ranking opportunities.

3. Backlinks to ranking pages

Instead of checking backlinks to the entire domain, examine backlinks pointing to the specific ranking pages.

Example:

• Page #1 has 2 backlinks
• Page #2 has 5 backlinks
• Page #3 has 0 backlinks

That keyword may be easier than a raw KD score suggests.

4. Content quality

Many "low competition" keywords are actually won by mediocre content.

Questions to ask:

• Is the information outdated?
• Is it thin?
• Is it AI-generated without added value?
• Does it miss important subtopics?

If yes, ranking may be achievable with a substantially better page.

5. Topical authority

Google increasingly rewards sites with depth in a subject.

For example:

• A site with 150 articles about personal finance is more likely to rank for a new finance keyword than a general-interest site publishing one finance article.

This isn't captured by most keyword difficulty metrics.

6. SERP features

Check whether the search results include:

• AI Overviews
• Featured snippets
• Shopping results
• Local packs
• Videos
• Image packs

Even if you rank #1 organically, these features can reduce click-through rates.

7. Search volume reliability

For long-tail keywords, compare estimates across tools. A keyword showing:

• 90 searches in Ahrefs
• 140 in Semrush
• 10–100 in Google Keyword Planner

is probably worth investigating further rather than taking any one estimate as exact.

Underrated tools

These are particularly useful for finding opportunities others miss:

• AlsoAsked — maps question-based searches from Google's "People Also Ask."
• AnswerThePublic — uncovers question and comparison keywords.
• KeywordTool.io — expands autocomplete suggestions.
• Google Trends — identifies emerging topics before they become highly competitive.
• Search Console Help — useful for learning how to use your own site's search performance data.

Best choices by budget

• Free: Google Keyword Planner + Google Trends + Search Console
• Under $50/month: Keywords Everywhere + LowFruits
• $100–200/month: Ahrefs or Semrush
• Agency or publisher: Ahrefs + Semrush + Keyword Insights + LowFruits

One final tip: don't filter solely by a tool's keyword difficulty score. Many experienced SEOs first look for search results where several pages are from smaller or less authoritative sites, then verify backlinks, content quality, and search intent. In practice, those signals often predict ranking potential better than a single numerical difficulty metric.

If your goal is to find keywords that are actually winnable—not just those with a low numerical "keyword difficulty" score—it's worth combining multiple tools. Every SEO platform calculates difficulty differently, and none can perfectly predict how hard it will be to rank.

Here's how I'd think about the landscape:

What "true ranking difficulty" actually depends on

A keyword's published difficulty score is only one signal. Before targeting a keyword, I usually check:

• Domain authority of the top 10: Are small sites or only major publishers ranking?
• Search intent: Does your content genuinely match what users want?
• Content quality gap: Can you create something noticeably better?
• Backlink profiles: Are the top pages winning because of links or because they're simply the best answer?
• Topical authority: Is Google favoring sites with deep coverage of the subject?
• SERP features: Ads, AI Overviews, featured snippets, videos, shopping results, and local packs can reduce organic clicks.

A keyword with a "KD 35" may actually be easier than one with "KD 10" if the results are outdated or low quality.

My favorite combinations

Budget (<$50/month)

• LowFruits
• Google Keyword Planner
• Google Search Console (if you already have a site)

Excellent for niche sites and new blogs.

Mid-range ($100–200/month)

• Ahrefs Starter or Lite
• LowFruits

This gives you reliable backlink analysis plus a specialized tool for spotting weak SERPs.

Professional

• Ahrefs
• Semrush
• Keyword Insights

This combination covers discovery, competitive analysis, clustering, and content planning.

A practical workflow

1. Generate hundreds of keyword ideas.
2. Filter for long-tail phrases (typically 4+ words).
3. Ignore the platform's difficulty score initially.
4. Open the live SERP.
5. Ask:
   • Are forums, Reddit, Quora, or niche blogs ranking?
   • Are pages old or thin?
   • Do several results have few referring domains?
   • Can you produce a substantially better resource?
6. Prioritize keywords where the answer to several of those questions is "yes."

Those manual checks often outperform relying on any single keyword difficulty metric.

If you want the closest thing to a "true" difficulty estimate

No single tool calculates this perfectly, but the strongest combination is:

• Ahrefs for backlink quality and competitor analysis.
• LowFruits for identifying SERPs with weaker-ranking websites.
• A manual review of the current top 10 search results.

That approach gives a more realistic assessment than any standalone keyword difficulty score because it combines quantitative metrics with qualitative evaluation of the actual pages you're competing against.

Yes. If your goal is to find keywords that are actually easier to rank for (rather than just having a low keyword difficulty score), I recommend combining a keyword database with SERP analysis. Most standalone "KD" metrics miss important signals like search intent, site authority of ranking pages, topical relevance, and whether Google is favoring forums, Reddit, or niche sites.

Here's how I'd evaluate the best tools.

My favorite for finding "hidden" easy keywords

1. LowFruits

This tool was built specifically to find search results where Google already ranks:

• small blogs
• forums
• Reddit
• Quora
• weak niche sites

Instead of relying on a keyword difficulty formula, it looks for SERPs with weak competitors.

This is particularly effective for:

• affiliate sites
• local SEO
• SaaS blogs
• new websites

2. Ahrefs

Ahrefs still has one of the best keyword databases.

The real value comes from manually inspecting:

• Domain Rating of ranking pages
• backlinks to individual pages
• search intent
• topical authority

Sometimes a keyword with KD 30 is much easier than one with KD 5.

3. Keyword Chef

Very good for discovering:

• long-tail questions
• buyer intent searches
• informational keywords

It also flags SERPs filled with forums and low-authority websites.

Don't trust Keyword Difficulty alone

Most tools calculate KD primarily from backlinks.

That ignores things like:

• Reddit dominating results
• outdated articles
• poor content quality
• weak topical authority
• exact search intent
• Google favoring smaller sites

A better workflow is:

1. Find keywords with volume (50–2,000/month can be a productive range for many sites).
2. Open the live SERP.
3. Check whether the top 10 contains:
   • forums
   • Reddit
   • Quora
   • small blogs
   • thin content
   • pages with few referring domains
4. Assess whether you can create something substantially more useful for the same intent.

Advanced tools for "true" ranking difficulty

If you're comfortable digging deeper:

• Keywords Everywhere — overlays keyword metrics while you browse Google.
• SEO Minion — quick on-page and SERP analysis.
• Detailed SEO Extension — inspect page structure and optimization.
• Surfer — content and SERP analysis.
• Clearscope — content optimization based on top-ranking pages.

An effective stack by budget

• Free: Google Search + Google Trends + Keywords Everywhere + SEO Minion
• Under $50/month: LowFruits + Mangools
• $100–200/month: Ahrefs + LowFruits (one of the strongest combinations for many independent publishers)
• Enterprise: Semrush + Ahrefs + Surfer or Clearscope

What I use to estimate "true" difficulty

Rather than relying on a single KD score, I'd score a keyword using factors such as:

• Average authority of the top 10 ranking pages
• Number of referring domains to those pages (not just the domains)
• Search intent consistency (whether Google strongly favors one type of result)
• Presence of forums, user-generated content, or niche sites
• Content quality and freshness of the ranking pages
• Topical authority required to compete
• SERP features (AI Overviews, featured snippets, videos, shopping, local packs) that may reduce organic click-through

That approach tends to predict ranking difficulty more accurately than any single vendor's keyword difficulty metric.

If your goal is to find keywords that are both realistic to rank for and worth targeting, the biggest challenge is that most "keyword difficulty" (KD) scores are rough estimates. The best approach is to combine multiple signals: search intent, authority of the current top-ranking pages, backlink profiles, and SERP composition.

Here's how I'd compare the strongest tools.

My favorite combinations

For affiliate sites and niche blogs

• LowFruits
• Ahrefs (or SERanking)
• Google Search Console for validating existing opportunities

LowFruits excels at identifying keywords where Google's first page already contains:

• Reddit threads
• Quora
• Small blogs
• Low-authority websites
• User-generated content

Those are often signs that Google hasn't found many strong resources.

For SaaS and B2B SEO

• Ahrefs
• Semrush
• Google Search Console

Ahrefs is particularly useful because you can inspect:

• Domain Rating (DR)
• URL Rating (UR)
• Referring domains
• Traffic potential
• Parent topics

This provides a more nuanced picture than relying on a single KD number.

Tools that estimate "true" ranking difficulty

The most useful tools don't just calculate a keyword score—they let you inspect the actual search results.

Some standouts include:

• LowFruits for detecting weak competitors.
• KeywordChef for surfacing long-tail keywords with less competitive SERPs.
• Ahrefs Keyword Explorer for backlink-based difficulty and SERP inspection.
• Semrush Keyword Overview for combining KD with intent, volume, and SERP features.

A simple framework for judging "easy" keywords

Instead of trusting a KD score alone, check these factors:

• Search volume between roughly 50–1,000 monthly searches can still be valuable if the intent is strong.
• Fewer than about 20–30 referring domains pointing to most top-ranking pages is often a good sign.
• At least three or four top-10 results are from sites with relatively low authority or are forum/community pages.
• The search results include Reddit, Quora, YouTube videos, or discussion threads, suggesting Google is filling gaps in available content.
• The keyword is very specific (for example, "best CRM for roofing contractors under 10 employees") rather than broad ("best CRM").

Best overall recommendations by budget

• Best premium: Ahrefs
• Best value: SERanking
• Best for finding hidden low-competition opportunities: LowFruits
• Best for long-tail discovery: KeywordChef
• Best free option: Google Search Console combined with Google Keyword Planner

If you're building topical authority at scale, the most reliable workflow is to use Google Search Console to identify queries where you're already ranking on page two or the bottom of page one, then use Ahrefs or LowFruits to evaluate the competition and prioritize the easiest opportunities for optimization. This often produces faster results than chasing entirely new keywords.

If your goal is to find keywords you can actually rank for—not just those with a low "KD" score—you'll get the best results by combining a keyword database with a SERP analysis tool. No single difficulty metric captures the full picture, and even the tool vendors recommend using their scores as estimates rather than definitive answers. help.ahrefs.comwww.semrush.com

Here's how I'd categorize the best options:

My favorite workflow

1. Generate a large keyword list

• Ahrefs Keywords Explorer
• Semrush Keyword Magic Tool
• Google Search Console (for existing sites)

Don't filter too aggressively at this stage.

2. Ignore the published KD score initially

Treat it as a rough filter only.

Different tools calculate KD differently:

• Ahrefs focuses primarily on referring domains.
• Semrush includes backlink authority plus additional SERP signals. help.ahrefs.comwww.semrush.com

3. Evaluate the true ranking difficulty

This is where many SEOs gain an edge.

Look for searches where the first page includes:

• Forums (Reddit, Quora)
• Small niche blogs
• Low-authority sites
• Outdated content
• Thin articles
• Pages that don't exactly answer the query
• Mixed search intent (Google isn't sure what users want)

These are often easier than the KD score suggests.

LowFruits automates much of this by highlighting "weak spots" in SERPs instead of relying on a single numeric difficulty score. lowfruits.io

4. Estimate topical authority required

Ask:

• Are the top 10 mostly DR 80+ sites?
• Or are there DR 20–40 sites succeeding?
• Is the ranking page itself strong, or is it just benefiting from its domain?

The latter is often a good opportunity.

5. Check content quality

Sometimes the #1 result is:

• 600 words
• last updated in 2021
• missing important subtopics
• poor UX

Those keywords can be surprisingly attainable.

My recommended stack by budget

Under $50/month

• LowFruits
• Google Search Console
• Google search (manual SERP review)

Great for niche sites and long-tail content.

Around $100/month

• Semrush
• LowFruits

A strong balance between keyword discovery and realistic competition analysis.

$150+/month

• Ahrefs
• LowFruits
• Google Search Console

This combination provides:

• excellent keyword discovery,
• industry-leading backlink data,
• realistic SERP difficulty assessment,
• and opportunities your own site is already close to winning.

A simple "True Difficulty" checklist

Instead of trusting a single KD number, score a keyword like this:

• ✅ Search intent is clear.
• ✅ At least 3 of the top 10 results come from smaller websites.
• ✅ Few high-quality backlinks on ranking pages.
• ✅ Existing content is outdated or incomplete.
• ✅ You can produce significantly better content.
• ✅ Your site already has topical authority in that area.

If most of those are true, the keyword is often easier than the published KD suggests.

In practice, this kind of manual SERP evaluation tends to be more predictive than any standalone keyword difficulty metric, which is why experienced SEOs often use KD to narrow candidates and then inspect the actual search results before committing to a topic. lowfruits.iowww.reddit.com