ChatGPT answers, unedited

If your goal is republishing/updating old content and reclaiming backlinks that currently point to dead URLs, I’d focus on these:

1. Ahrefs — strongest fit for this workflow
   • Site Explorer → Backlinks → Broken backlinks shows referring pages linking to your 404 URLs, including anchor/context. help.ahrefs.comwww.semrush.comahrefs.com
   • Pages → Best by Links → HTTP code: 404 lets you find your dead pages with the most referring domains, which is particularly useful when deciding which old articles are worth restoring. ahrefs.com
   • Backlinks → Lost is useful for a second pass: links that disappeared even though the destination isn't necessarily a 404. ahrefs.comahrefs.com

2. Semrush — good alternative
   • Backlink Audit → Target URL Error identifies backlinks pointing to broken pages, making it easy to find URLs that could be restored or redirected. www.semrush.com
   • It also monitors new, broken, and lost backlinks, so it's useful for ongoing reclamation rather than a one-time audit. www.semrush.com

3. Google Search Console — useful free cross-check
   • Its Links report gives you Google's discovered external links and the pages receiving them. However, Google explicitly says it's a sample rather than a comprehensive backlink list, and it doesn't tell you directly which links are currently broken. support.google.com
   • I'd use it alongside Ahrefs/Semrush rather than as the primary reclamation tool.

For your specific republishing workflow

I'd do:

Old URL inventory → find 404s with backlinks → prioritize by referring domains/quality → republish the relevant article → 301 old URL to the new URL → verify the backlinks resolve.

For example, if /2020/old-guide/ has 35 referring domains but now returns 404, that's a strong candidate for republishing. If the new article substantially covers the same intent, redirect the old URL to it rather than creating a competing new URL.

One important distinction: “broken backlinks” and “lost backlinks” aren't the same thing. A broken backlink usually means the external site still links to you, but your target URL is dead; a lost backlink can mean the external site removed the link, redirected the page, changed canonicalization, etc. Ahrefs provides separate reporting for these. help.ahrefs.com

My practical pick: if you're doing a serious content-republishing project, Ahrefs is probably the single tool I'd use first, because its broken-backlink + 404-page + lost-backlink reports map very closely to the reclamation workflow. ahrefs.comahrefs.com

For republishing old content, I’d use:

• Ahrefs Site Explorer — strongest fit: its Broken backlinks report finds inbound links pointing to your 404s, while Lost backlinks helps identify links that disappeared. Ahrefs Help Center Ahrefs
• Semrush Backlink Audit — useful for tracking new, lost, and broken backlinks and monitoring changes over time. Semrush Semrush
• Ahrefs Broken Link Checker — a simpler option for quickly finding your most-linked dead pages. Ahrefs

Best workflow: export your 404s with referring domains → identify the old URL/content → republish at the same URL if possible, or 301 it to the closest relevant replacement → prioritize pages with many/high-quality referring domains. Ahrefs

Yes. For republishing old content, I’d focus on tools that show both lost backlinks and backlinks pointing to old/404 URLs.

Best tools

• Ahrefs — best overall for this use case. Its Site Explorer has a dedicated Broken backlinks report showing referring pages that point to your 404 URLs, plus a Lost backlinks report showing links that disappeared. You can filter by referring-page quality, anchor text, URL, and loss reason. Ahrefs Ahrefs Help Center

ahrefs.com

• Semrush — good alternative. Its Backlink Audit has a Lost & Found report for new, broken, and lost backlinks, and its Target Pages report can identify target URLs with broken backlinks. Semrush Semrush

semrush.com

For your specific republishing workflow

I'd use Ahrefs like this:

1. Go to Site Explorer → your domain → Pages → Best by links.
2. Filter HTTP code = 404.
3. Sort by referring domains rather than raw backlinks. This surfaces old pages that have accumulated links from multiple sites. Ahrefs Ahrefs
4. Look at the old URL, anchor text, and referring pages to determine what the original content covered.
5. If you're republishing that content, restore the old URL if possible. That's often cleaner than publishing the new version at a completely different URL.
6. If the URL has genuinely changed, 301 redirect the old URL to the new equivalent, provided the new page is a close topical match. Ahrefs specifically recommends restoring or redirecting valuable broken pages. Ahrefs Ahrefs
7. Separately check Backlinks → Lost for pages that are still live but have had valuable links removed. Those are outreach/reclamation opportunities rather than redirect opportunities. Ahrefs

The key distinction:

• 404 URL + good inbound links → reclaim via restore/301.
• Live URL + backlink disappeared → contact the referring site and ask for restoration.
• Competitor's 404 page + lots of backlinks → potential broken-link-building opportunity. Ahrefs

If you're doing this across a large archive of old posts, Ahrefs is probably the one I'd pick because you can export the broken-backlink data and build a prioritized “republish/revive/redirect” spreadsheet from it.

Yes. For republishing old content, I’d prioritize tools that can identify two related opportunities:

1. Broken inbound links — other sites still link to an old URL on your site that now returns 404.
2. Lost backlinks — the referring site used to link to you but the link has disappeared, potentially because you changed/republished the page.

Best tools

• ahrefs.com — best overall for this workflow. Its Broken backlinks report shows referring pages linking to your 404 URLs, including anchor text and surrounding text. You can also use Best by Links → HTTP 404 to find your old pages with the most referring domains. Ahrefs Ahrefs Help Center
• semrush.com — good alternative. Its Backlink Audit includes new, broken, and lost backlink data and can alert you to changes over time. Semrush Semrush
• majestic.com — particularly useful for historical/lost-link analysis. Its Lost Backlinks report lets you examine missing links over a four-month timeline and evaluate referring-page/domain trust and topical relevance. Majestic

For your republishing project, I'd do this

Ahrefs → Site Explorer → your domain → Pages → Best by Links → filter 404 not found.

Then sort by referring domains. This gives you a prioritized list like:

/old-guide/ → 404 → 47 referring domains
/2019-study/ → 404 → 23 referring domains
/original-research/ → 404 → 12 referring domains

For each high-value old URL:

• Determine whether you're republishing essentially the same content.
• If yes, restore it at the same URL if possible. That's usually the cleanest reclamation.
• If the content has moved to a new URL, 301 redirect the old URL to the most relevant new page.
• If you're substantially replacing the content, consider recreating the useful resource and then contacting the strongest referring domains.
• Separately check Backlinks → Lost for links that disappeared even though the page itself isn't 404. Ahrefs specifically recommends filtering lost links by loss reason to identify reclaimable opportunities. Ahrefs Ahrefs Help Center

One important distinction: don't treat every 404 backlink as worth reclaiming. Prioritize relevant referring domains + strong pages + meaningful anchor/context, rather than raw backlink count.

If you're doing this across hundreds/thousands of old articles, I can also give you a repeatable spreadsheet workflow for finding the highest-value URLs to republish first.

Yes. For republishing old content, I’d focus on tools that can identify both (a) backlinks pointing to URLs that now 404/redirect and (b) backlinks that used to exist but disappeared.

Best tools for backlink reclamation

• Ahrefs — probably the best all-around choice. Its Broken backlinks report finds external pages linking to your 404 URLs, while Backlinks → Lost identifies links that disappeared. You can prioritize by referring-page authority, anchor text, etc. Ahrefs Ahrefs

ahrefs.com

• Semrush Backlink Audit — useful if you already use Semrush. It tracks new, lost, and broken backlinks, and can alert you to changes. Semrush

semrush.com

• Majestic — particularly useful for historical/lost-link analysis. Its Lost Backlinks report lets you investigate links that stopped pointing to you and examine their authority and topical relevance. Majestic

majestic.com

• Google Search Console — free and worth using as a second data source. Its Links report shows external links and your top-linked pages, although Google explicitly says the report is not a comprehensive list of every backlink. Google Help

For your specific republishing workflow

I'd do this in Ahrefs:

1. Export your site's 404 pages with backlinks.
2. Identify old articles that you're planning to republish.
3. For each old URL, check Broken backlinks to see who still links to it.
4. Republish the article at the same URL whenever possible. That can immediately recover the value of existing inbound links.
5. If the URL must change, 301 redirect the old URL to the closest relevant new URL.
6. Separately check Lost backlinks for high-quality links that disappeared while the content was offline. Ahrefs Ahrefs Help Center
7. For particularly valuable links, contact the referring site and ask them to update the URL rather than relying solely on a redirect.

One important distinction: a broken backlink is not necessarily a lost backlink. A broken backlink can mean someone is still actively linking to your old/404 URL—making it an especially good reclamation opportunity. A lost backlink means the external site appears to have removed or changed the link. Ahrefs exposes both workflows. Ahrefs Ahrefs Help Center

If you're doing this at scale across hundreds/thousands of old articles, I can also give you a practical “old-content republishing + backlink reclamation” workflow using Ahrefs/Semrush + Screaming Frog + GSC, including exactly which exports and filters to use.

For republishing old content, you’re looking for link reclamation tools: platforms that show backlinks pointing to old URLs, lost links, broken pages (404s), and referring domains you can contact or redirect. The strongest options are:

Best backlink tools for finding reclaimable inbound links

1. ahrefs.com — best overall for link reclamation

Best for: finding lost backlinks, dead URLs, and high-value links after content refreshes.

Useful workflows:

• Site Explorer → Backlinks → Lost: find links that disappeared.
• Filter for: - Referring domains with high authority
• Follow links
• Links lost because the page was deleted or the link was removed
• Best by links / Broken backlinks reports help identify URLs that had equity but are now dead. Ahrefs

Good republishing use case:

1. Export old URLs from your CMS.
2. Check each old URL in Ahrefs.
3. Find referring domains still linking to the old version.
4. Republish the content or set a 301 redirect.
5. Contact important sites if their link now points to a dead page.

2. semrush.com — best if you also need SEO workflow tools

Best for: teams already using keyword tracking, audits, and outreach workflows.

Useful features:

• Backlink Analytics
• Lost & broken backlink discovery
• Backlink Audit
• Backlink Gap (find sites linking to competitors but not you)

It’s especially useful when republishing because you can combine:

• old content performance
• keyword opportunities
• backlink recovery targets

01net.com

3. search.google.com — free first-party baseline

Best for: seeing links Google knows about.

Limitations:

• Doesn’t give robust historical lost-link analysis.
• Doesn’t show the full backlink universe.
• Better for confirming important URLs than prospecting.

4. moz.com — good for simpler audits

Best for: smaller teams that want straightforward link tracking.

Useful metrics:

• Linking domains
• Lost links
• Domain Authority
• Spam Score

5. majestic.com — useful for historical link research

Best for: digging into older backlink profiles.

Its historical index can help when you’re reviving content that was published years ago and you want to understand its previous link footprint. LinkVetted

My recommended workflow for republishing old content

1. Find old URLs

• Export from your CMS
• Pull from sitemap history
• Use analytics to find previously valuable pages
• Check backlinks

• Ahrefs: Lost backlinks + Broken backlinks
• Semrush: Backlink Analytics
• Search Console: confirm important links
• Prioritize reclaim opportunities

Highest priority:

• Links from authoritative sites
• Links from relevant pages
• Links pointing to URLs returning 404
• Links where the new article is an obvious replacement
• Recover the equity

Options:

• Restore the original URL
• Publish the improved version at the same URL
• Add a 301 redirect if the URL changed
• Email important linking sites asking them to update the link

For most content-refresh projects, a practical stack is Ahrefs + Google Search Console. Ahrefs is usually the fastest way to find the “we used to have a great link here” opportunities. Ahrefs

For republishing old content, you’re looking for backlink discovery + broken-link analysis tools that can show links pointing to old/dead URLs so you can redirect or reclaim them.

• Ahrefs — probably the best all-around choice. Use Site Explorer → Best by Links → Broken backlinks to find external links pointing to 404/dead pages. You can then map those URLs to the republished page or a relevant replacement.
• Semrush — its Backlink Analytics and Backlink Audit tools can help identify lost/broken backlinks and referring domains.
• Majestic — useful if your primary goal is backlink discovery and historical link data; its index can uncover links that other tools miss.
• Moz Link Explorer — a simpler option for checking inbound links to specific old URLs and identifying potentially valuable referring domains.
• Google Search Console — useful as a supplement, especially for seeing your site's current external links, but it isn't nearly as good for historical/broken-backlink research.

My workflow for old-content republishing

1. Export your site's old URLs, especially pages that were deleted, consolidated, or substantially rewritten.
2. Run those URLs through Ahrefs or Semrush and identify pages with valuable inbound links.
3. Prioritize links from authoritative, relevant referring domains.
4. Republish the content at the same URL if possible. If the URL changes, use a 301 redirect from the old URL to the most relevant new URL.
5. Check whether the referring page's link now resolves correctly.
6. For particularly valuable backlinks where a redirect isn't ideal, contact the referring site and ask them to update the link directly.

If you're doing this at scale, I'd pick Ahrefs first. Its broken-backlink reports make this particular reclamation workflow relatively straightforward.

Yes. For reclaiming backlinks to old content, I’d prioritize tools that let you find broken/lost inbound links, identify the old target URL, and export referring pages for outreach.

• Ahrefs — probably the best all-around option. Use Site Explorer → Backlinks → Broken to find external pages linking to URLs on your site that return 404s. Its Lost Backlinks report is also useful when the page still exists but a link disappeared.
• Semrush — its Backlink Analytics and Backlink Audit tools can surface lost/broken links and referring domains. Good if you already use Semrush for keyword/content research.
• Majestic — particularly useful for historical link data and identifying links that have disappeared. Its Historic Index can be valuable when republishing substantially older content.
• Google Search Console — free, but much more limited. It can help you see which pages Google associates with links, though it isn't a comprehensive backlink-reclamation database.
• Moz Link Explorer — useful for backlink discovery and lost-link research, especially for smaller-scale audits.

For republishing old content, I'd use this workflow

1. Crawl your old URLs and identify pages that were deleted, renamed, or consolidated.
2. Put the old URLs into Ahrefs or Semrush and look specifically for backlinks pointing to 404/410 pages.
3. Prioritize links from relevant, authoritative referring domains.
4. Check whether the old content is being republished at the same URL, redirected to a new URL, or substantially rewritten.
5. For a deleted URL that now has a replacement, implement a 301 redirect where appropriate.
6. For valuable external links, contact the referring site and ask them to update the link directly.
7. Separately look for lost backlinks where the linking page still exists but the link was removed—you may be able to recover those without changing your content.

My pick: If your primary goal is backlink reclamation during a content refresh, start with Ahrefs. The broken-backlink workflow is particularly straightforward. If you're doing a large historical-content migration, I'd pair it with Semrush or Majestic to cross-check the backlink inventory.

If you tell me whether you're keeping the old URLs, changing URLs, or merging old articles, I can give you a specific backlink-reclamation workflow and spreadsheet structure.

For republishing old content, the best tools for finding broken inbound links you can reclaim are:

• Ahrefs — probably the best all-around option. Use Site Explorer → Broken backlinks to find external pages linking to old/dead URLs on your site. You can then redirect the old URL to the republished page or contact the linking site.
• Semrush — Backlink Analytics can help identify backlinks pointing to broken or lost pages. Its link database and backlink audit features are useful for larger sites.
• Majestic — particularly useful for backlink discovery and historical link data; good as a second database to cross-check Ahrefs/Semrush.
• Google Search Console — free, but limited for this specific task. It can help identify your site's indexed pages and link data, but it isn't a replacement for a dedicated backlink index.
• Screaming Frog — useful after you've identified the old URLs. Crawl your site to find 404s, redirect chains, and other technical issues, then pair that with Ahrefs/Semrush to determine which 404s have valuable inbound links.

A practical reclaim workflow

1. Export your site's 404/old URLs.
2. Put those URLs into Ahrefs → Site Explorer → Broken backlinks (or Semrush).
3. Prioritize links by referring-domain quality, relevance, and authority.
4. If the old content is being republished at a new URL, add a 301 redirect from the old URL to the new one.
5. If there isn't an equivalent replacement, consider contacting the referring site and asking them to update the link.
6. Re-crawl and monitor the reclaimed links.

If you only want one tool: I'd pick Ahrefs for this particular job because the broken-backlink workflow is very direct.

If you tell me what CMS you're using (WordPress, Webflow, etc.), I can also give you a step-by-step process for finding every old URL with valuable backlinks and deciding which ones deserve a 301.

Yes. For republishing old content, you want backlink tools that can identify links pointing to the old URL (especially links returning 404/410) so you can redirect or reclaim them.

• Ahrefs — probably the strongest all-around option. Use Site Explorer → Best by links → Broken backlinks to find external pages linking to dead URLs on your site. You can then 301 those URLs to the republished page where the intent matches.
• Semrush — its Backlink Analytics and Backlink Audit tools can surface lost/broken backlinks and referring domains. Useful if you're already using Semrush for keyword research.
• Moz Link Explorer — good for finding inbound links to specific URLs and checking link status, though its backlink index is generally less comprehensive than Ahrefs' for this use case.
• Majestic — particularly useful when you care about link discovery and historical backlink data; its historical index can help uncover links that newer crawlers may miss.
• Google Search Console — free and useful for confirming which old URLs Google knows about, but it isn't designed to give you a comprehensive list of broken inbound links.

A practical reclamation workflow

1. Export your site's old URLs from your CMS, sitemap/history, or analytics.
2. Run those URLs through Ahrefs or Semrush and identify pages with external backlinks.
3. Filter for URLs that are now 404/410, or URLs that were replaced during the republishing.
4. Prioritize URLs with high-quality referring domains and links that are still live.
5. 301 redirect the old URL to the republished equivalent—not automatically to the homepage.
6. For especially valuable links, contact the referring site and ask them to update the destination URL.
7. Re-crawl afterward to verify the links now resolve correctly.

If your main goal is specifically “find every valuable backlink pointing at old/dead URLs,” I'd start with Ahrefs. Its broken-backlink workflow is particularly suited to this job.

Yes. For reclaiming backlinks to old/republished content, the most useful tools are:

• Ahrefs — probably the best all-around choice. Use Site Explorer → Backlinks → Broken to find inbound links pointing to dead/404 URLs, then map those URLs to the republished page or a relevant replacement.
• Semrush — its Backlink Audit and backlink analytics can surface lost/broken links and referring domains. Useful if you're already using Semrush for SEO.
• Moz Link Explorer — good for finding inbound links to old URLs and checking whether the links are still live.
• Majestic — particularly useful for backlink-history and link-discovery work; its historical index can help uncover links that newer crawls miss.
• Google Search Console — essential but limited. It can show links Google knows about, but it isn't a comprehensive broken-backlink database.

A good reclamation workflow

1. Export your old URLs that are being republished or consolidated.
2. In Ahrefs/Semrush, check each old URL for backlinks.
3. Identify links pointing to: - 404 pages
4. deleted URLs
5. outdated URL structures
6. HTTP versions
7. old articles that have been consolidated
8. Determine the best current destination for each link.
9. If appropriate, 301 redirect the old URL to the new equivalent.
10. For especially valuable referring domains, contact the site owner and ask them to update the link directly.
11. Re-crawl periodically to verify the links have been reclaimed.

If you're doing this at scale, I'd pick Ahrefs first. Its broken-backlink workflow is especially convenient for finding external links that are effectively being wasted because they point to dead pages.

If you tell me whether you're republishing hundreds/thousands of old URLs or just a few dozen, I can give you a more efficient bulk-reclamation workflow.

If you’re republishing old content and want to reclaim lost SEO value, you’re mainly looking for backlink index tools that can show:

• inbound links pointing to old URLs that now return 404s
• backlinks to outdated versions of pages
• links that point to redirects or broken destinations
• referring domains worth contacting for link updates

The most useful tools:

1. ahrefs.com — best overall for link reclamation

Best for: finding broken backlinks at scale.

Useful reports:

• Site Explorer → Best by Links → HTTP code: 404

Finds pages on your site that have backlinks but no longer exist.

• Site Explorer → Broken backlinks

Shows external pages linking to dead URLs.

• Link Intersect

Finds sites linking to competitors but not you (useful during content refreshes).

Workflow:

1. Export broken backlink URLs.
2. Identify which old content each URL represented.
3. Republish or create a replacement page.
4. Either restore the old URL or redirect it appropriately.
5. Reach out to high-value linking domains.

2. semrush.com — strong for audits + outreach

Best for: combining backlink recovery with broader SEO campaigns.

Useful features:

• Backlink Audit → Lost & Broken Backlinks
• Site Audit → Broken Pages
• Backlink Analytics → Indexed Pages

It’s especially helpful if you want to prioritize:

• high-authority referring domains
• toxic links vs valuable links
• outreach opportunities

3. majestic.com — strong historical link data

Best for: older sites with long backlink histories.

Useful metrics:

• Trust Flow
• Citation Flow
• Link history

Majestic can uncover older links that newer indexes may miss, which is valuable when reviving evergreen content.

4. moz.com — simpler option

Best for: smaller teams or occasional audits.

Useful reports:

• Top Linking Domains
• Lost Links
• Broken inbound links

5. search.google.com — free baseline

Best for: seeing Google’s view of your site.

Useful areas:

• Pages indexing issues
• Crawl errors (where available)
• Links report

It won’t replace a backlink crawler, but it can help identify pages Google still knows about.

6. screamingfrog.co.uk — useful companion tool

Best for: validating fixes.

Pair it with backlink data:

• crawl your old URL list
• identify status codes
• find redirect chains
• check whether reclaimed pages are internally linked

A practical content republishing workflow

1. Export all dead URLs with backlinks

• Ahrefs/Semrush → broken backlinks report
• Prioritize by link value

Focus on:

• high-authority referring domains
• relevant pages
• multiple backlinks
• old URLs that had organic traffic
• Choose recovery method

• Same content still valuable → restore the original URL
• Updated version exists → 301 redirect old URL
• Topic changed significantly → create a new page and redirect only if relevant
• Update internal links

A reclaimed backlink is much more valuable if your site architecture supports the revived page.

5. Contact link owners selectively

For strong editorial links, a short request to update the URL can work well.

For a republishing project specifically, I’d usually start with Ahrefs broken backlinks + Google Search Console + Screaming Frog. That combination catches most “we had links, deleted the page, and lost the equity” situations.

If you’re republishing old content and want to reclaim broken inbound links (backlinks pointing to dead URLs, outdated pages, or URLs you’re replacing), you’ll want tools that can:

1. Find backlinks pointing to your old/dead URLs.
2. Identify referring pages that still have link equity.
3. Help you decide whether to redirect, restore, or outreach.

Here are the strongest options:

Best backlink tools for broken link reclamation

Ahrefs

Best overall for backlink recovery.

Useful workflows:

• Site Explorer → Best by Links → Broken backlinks

Finds external pages linking to URLs on your site that return 404s.

• Lost backlinks report

Shows links you previously had that disappeared.

• Content Explorer

Helps find old versions of your content and link opportunities.

Good for:

• Large sites
• Historical backlink analysis
• Prioritizing high-authority links

ahrefs.com

Semrush

Strong alternative, especially if you already use it for SEO.

Useful workflows:

• Backlink Audit → Indexed Pages
• Backlinks report → Broken Pages
• Filter referring URLs by: - Target URL = deleted page
• HTTP status = 404
• Authority Score

Good for:

• Combining backlink cleanup with broader SEO auditing

semrush.com

Moz Link Explorer

Useful for a simpler backlink recovery workflow.

Look for:

• Top linked pages
• Discovered and lost links
• Spam score/context

Good for:

• Smaller teams
• Quick backlink checks

moz.com

Majestic

Very backlink-focused.

Helpful metrics:

• Trust Flow
• Citation Flow
• Historical backlink data

Good for:

• Finding valuable old links that competitors may have missed

majestic.com

Google Search Console

Free and useful, though less complete.

Check:

• Links report
• Pages with historical visibility
• Crawl errors (where available)

Good for:

• Confirming which URLs Google knows about
• Pairing with a third-party backlink crawler

search.google.com

A practical broken backlink reclamation workflow

1. Export old URLs

• Pull URLs from your CMS, sitemap history, analytics, or old content inventory.
• Run them through Ahrefs/Semrush

• Find backlinks pointing to: - 404 pages
• Redirect chains
• Old article URLs
• Deleted resources
• Prioritize links

Focus on:

• High-authority referring domains
• Relevant pages
• Links with anchor text matching your updated content
• Choose a recovery method

• Restore the old URL if the content is still valuable.
• Create a 301 redirect if the new page is the clear replacement.
• Contact the linking site if a manual update would make sense.
• Republish strategically

When refreshing content:

• Keep the same URL when possible.
• Preserve existing backlinks.
• Update the publish date only when the content has materially changed.

Other useful tools for the process

• Screaming Frog SEO Spider — crawl your site to find broken internal links and redirect issues. screamingfrog.co.uk
• Wayback Machine — recover old versions of pages to decide whether to restore or rewrite content. web.archive.org
• Google Analytics — identify historically valuable pages that lost traffic after being removed. analytics.google.com

For a republishing project specifically, Ahrefs’ “Broken backlinks” report + Wayback Machine + a redirect/content map is usually the fastest combination.

Yes. For republishing old content, I’d prioritize tools that can identify backlinks pointing to URLs that are now 404, redirected incorrectly, or have lost links.

Best tools for backlink reclamation

• ahrefs.com — best overall

• Broken backlinks report shows external pages linking to your 404 URLs, including anchor text and referring pages. Ahrefs Ahrefs Help Center
• Best by Links → HTTP code: 404 is particularly useful for finding old articles that accumulated backlinks before being deleted. Ahrefs
• Backlinks → Lost finds links that used to point to your content but have disappeared. You can filter/prioritize the valuable ones. Ahrefs
• For republishing, this is probably the first tool I'd use.
• semrush.com — good alternative

• Tracks new, broken, and lost backlinks, and can connect to Google Search Console and import Majestic data. Semrush Semrush
• Useful if your existing SEO workflow is already in Semrush.
• majestic.com — strong backlink database

• Its Site Explorer has Lost links, which identifies links that have stopped pointing to your site. Majestic
• Particularly useful as a second data source when you want to make sure Ahrefs/Semrush aren't missing valuable referring domains.

The workflow I'd use for old-content republishing

For each old URL:

1. Export its backlinks in Ahrefs.
2. Look specifically for 404/broken target URLs and high-quality referring domains.
3. Check whether the old article is worth restoring at the original URL.
4. If you're substantially updating the article, republish at the same URL whenever practical. That preserves the existing inbound-link destination.
5. If the URL must change, put a 301 redirect from the old URL to the closest equivalent new URL.
6. Separately check Lost backlinks—some may be recoverable simply by asking the referring site to update its link.
7. Prioritize links by relevance + referring-domain quality + traffic, rather than trying to reclaim every backlink.

One especially useful Ahrefs report is Best by Links → 404: it lets you find your site's dead pages that already have backlinks, so you can essentially build a list of "old articles we should revive because the web is already linking to them." Ahrefs

If you're doing this at scale across hundreds/thousands of old posts, I can also give you a specific Ahrefs/Semrush workflow and spreadsheet schema for deciding which old URLs to republish vs. redirect vs. leave dead.

For republishing old content, the most useful backlink tools for finding broken inbound links you can reclaim are:

• Ahrefs — probably the best all-around choice. Use Site Explorer → Broken backlinks to find external pages linking to URLs on your site that now return 404s. You can then redirect the old URL to the republished article or restore the original URL.
• Semrush — its Backlink Audit / Backlink Analytics tools can help identify lost or broken backlinks and referring domains.
• Moz Link Explorer — useful for finding inbound links and checking whether linked pages are still live.
• Majestic — particularly useful when you want a large backlink index and historical link data.
• Google Search Console — free and useful for monitoring links Google knows about, but it isn't as good as Ahrefs/Semrush for systematically finding broken inbound links.

A good reclamation workflow

1. Export your site's 404/old URLs from your analytics, CMS, or server logs.
2. Put those URLs into Ahrefs Site Explorer and look at Broken backlinks.
3. Prioritize broken URLs with: - High-authority referring domains
4. Relevant topical links
5. Multiple referring domains
6. Links that were previously sending meaningful traffic
7. Republish the strongest old content at the same URL if possible. This is usually the cleanest reclamation.
8. If the URL has changed, implement a 301 redirect from the old URL to the most relevant new URL.
9. For particularly valuable links, contact the referring site and ask them to update the link directly.
10. Re-crawl the referring pages afterward to verify the links resolve correctly.

If you're specifically doing a large-scale old-content republishing project, I'd start with Ahrefs. Its broken-backlink report makes it relatively easy to turn an archive of old URLs into a prioritized backlink-reclamation list.

Yes. For republishing old content, I’d prioritize tools that can identify backlinks pointing to URLs that are now 404s, redirects, or otherwise lost.

Best tools for backlink reclamation

• ahrefs.com — best overall for this use case. Its Site Explorer has a dedicated Broken backlinks report showing referring pages linking to your 404 URLs, including anchor text and surrounding text. You can also use Pages → Best by Links → HTTP code: 404 to find your dead pages with the most referring domains. Ahrefs Help Center Ahrefs
• semrush.com — good alternative. Backlink Audit tracks new, lost, and broken backlinks, and its Lost & Found reporting is useful for identifying links that disappeared after content changes. Semrush Semrush
• ahrefs.com — useful for a quick first pass. It specifically surfaces dead pages on your site that have backlinks, which is exactly what you want when deciding which old URLs deserve restoration or a 301. Ahrefs

The workflow I'd use

For a content-republishing project, Ahrefs is particularly well suited:

1. Export your site's 404 URLs with referring domains/backlinks.
2. Sort by referring domains, rather than raw backlink count.
3. For each high-value dead URL, determine whether the old article is being republished at the same URL or a new URL.
4. If the URL is changing, 301 the old URL to the new equivalent.
5. If the old article is being substantially replaced, redirect only when the new page is genuinely relevant; otherwise recreate the old URL where appropriate.
6. Check the referring pages' anchor text and surrounding copy to make sure the backlink actually relates to the republished content. Ahrefs specifically exposes that context in its broken-backlink report. Ahrefs Help Center

There's a second opportunity that's especially relevant to old content: look at lost backlinks, not just currently broken ones. A previously valuable article may have had links removed when the publisher refreshed their page. Ahrefs lets you filter lost links by things like link-loss reason and prioritize high-value links. Ahrefs

If you're doing this at scale, my stack would be Ahrefs + Wayback Machine + a crawler such as Screaming Frog: Ahrefs finds the backlink opportunities, Wayback helps reconstruct what the old URL contained, and the crawler verifies your redirects/status codes.

Yes. For republishing old content, you want tools that can identify two slightly different opportunities:

1. Broken backlinks — other sites still link to an old URL on your site that now returns 404.
2. Lost backlinks — the destination is live, but a site that previously linked to you has removed/changed the link.

Best tools

• ahrefs.com — best overall for this workflow. Its Broken backlinks report shows referring pages pointing to your 404s, including anchor text and surrounding text. Its Best by Links → HTTP 404 view is especially useful for finding old URLs that accumulated lots of referring domains. Ahrefs Help Center Ahrefs
• semrush.com — strong alternative. Its Target URL Error filter identifies backlinks pointing to broken pages, and it also tracks new, lost, and broken backlinks. Semrush Semrush
• ahrefs.com — useful free starting point. It can surface broken inbound links and the dead pages receiving them, although the deeper reclamation workflow is in Site Explorer. Ahrefs

The workflow I'd use for republishing

In Ahrefs:

Site Explorer → your domain → Pages → Best by Links → filter HTTP code = 404

Then prioritize URLs with:

• Lots of referring domains
• High-DR referring domains
• Relevant anchor text
• Historically meaningful organic traffic
• A topic that you're actually republishing

For each valuable URL, I'd generally use this decision tree:

Old URL → Does the republished content substantially match?

• Yes: restore the old URL if possible. This is usually the cleanest way to preserve the existing backlinks.
• No, but there's a very close replacement: 301 redirect the old URL to the new relevant page.
• No relevant replacement: don't force a redirect just to capture links.

Ahrefs specifically recommends restoring broken pages or redirecting them to relevant alternatives to reclaim the value of those backlinks. Ahrefs Ahrefs

Also check Backlinks → Lost. Those aren't necessarily broken, but they're often easy reclamation wins—for example, an article update accidentally removed your citation. Ahrefs lets you filter lost links and investigate why they disappeared. Ahrefs

If you're doing this at scale, I'd pick Ahrefs. The combination of 404 pages + referring domains + lost backlinks + historical backlink data maps very closely to an old-content republishing/link-reclamation project.

If you tell me what CMS you're using (WordPress, Webflow, etc.), I can also give you a step-by-step old-content backlink reclamation process, including exactly what to export from Ahrefs and how to prioritize the URLs.

Yes. For republishing old content, you want tools that can identify inbound links pointing to the old URL—especially links that now return 404s or redirect poorly—so you can reclaim that equity.

• Ahrefs — probably the best all-around choice. Use Site Explorer → Best by Links → Broken backlinks to find external pages linking to dead URLs on your site. You can also inspect historical backlinks and referring domains.
• Semrush — useful for auditing backlinks and identifying links to broken/404 pages. Its Backlink Audit and backlink analytics can help prioritize valuable referring domains.
• Google Search Console — free and useful for finding which old URLs Google knows about, but it doesn't give you a complete list of inbound backlinks, so pair it with Ahrefs or Semrush.
• Moz Link Explorer — good for backlink discovery and checking which pages/domains link to an old URL.
• Majestic — particularly useful when you want a large backlink index and metrics around referring domains/link quality.

A good reclaim workflow

1. Find your old/dead URLs from your CMS, sitemap, analytics, or Search Console.
2. Put those URLs into Ahrefs Site Explorer (or Semrush).
3. Filter for broken backlinks / HTTP 404.
4. Prioritize links from authoritative, relevant sites.
5. Republish the strongest old content at the same URL whenever possible.
6. If the URL has changed, implement a 301 redirect from the old URL to the most closely matching new page.
7. For particularly valuable backlinks, contact the referring site and ask them to update the link directly.
8. Recheck the backlinks after the redirect/republish to make sure they're resolving correctly.

My pick: If your primary goal is specifically “show me valuable external links pointing at old/broken URLs that we can reclaim,” I'd start with Ahrefs. If you're already paying for Semrush, it can handle much of the same workflow without adding another subscription.

For republishing old content, the most useful backlink tools are the ones that let you find links pointing to outdated URLs, identify broken inbound links (404s), and prioritize reclaim opportunities. Here are the strongest options:

Best backlink tools for broken link reclamation

A practical workflow for republishing old content

1. Export old URLs

• Crawl your site with a crawler such as Screaming Frog or use your CMS sitemap/history.
• Identify: - old blog posts
• removed pages
• changed URLs
• migrated content
• Find backlinks pointing to dead URLs

• In Ahrefs: - Enter your domain
• Go to Site Explorer
• Open Best by Links
• Filter for 404 pages
• Sort by referring domains or URL Rating
• These are your highest-value reclaim targets.
• Match old URLs to republished content

• If the new article covers the same topic: - Add a 301 redirect from old URL → new URL.
• If the page changed substantially: - Create a replacement page that satisfies the old link’s intent.
• Recover editorial links

• For valuable links that cannot be reclaimed by redirects: - Contact the referring site.
• Explain that the resource was updated.
• Ask them to update the URL.
• Check lost backlinks

• Look for links marked as: - lost
• broken
• removed
• pointing to redirects
• Some lost links are recoverable simply by restoring the old page or fixing redirects.

Extra tools that help with content refresh campaigns

• Wayback Machine — useful for seeing what an old URL contained before you republish it.
• Sitebulb — helpful for technical audits and redirect mapping.
• LinkResearchTools — geared toward advanced backlink analysis and link risk evaluation.

If you only choose one

For a content republishing campaign, Ahrefs is usually the fastest path because its broken backlink reports directly answer: “Which old URLs have valuable links that we can recover?”

A good process is:
Ahrefs broken backlinks → spreadsheet of old URLs → map to refreshed articles → implement 301s → outreach for high-value links.

For republishing old content, the goal is usually to find existing backlinks pointing to dead, outdated, or moved URLs so you can redirect them, restore pages, or update outreach targets. The most useful tools are those that expose lost backlinks, broken inbound links, and referring pages.

Best backlink tools for finding reclaimable broken inbound links

A practical workflow

1. Export broken inbound links

• In Ahrefs: Site Explorer → Broken backlinks
• In Semrush: Backlink Audit → Lost/Broken
• Filter for: - High Domain Rating/Authority referring sites
• Pages with many referring domains
• Relevant topical matches
• Group old URLs

• Example: - /old-guide-to-email-marketing → republished as /email-marketing-guide
• /2020-statistics-post → updated as /email-marketing-statistics-2026
• Choose the recovery method

• Best match exists: Add a 301 redirect from the old URL.
• Content is worth preserving: Restore the old URL and update it.
• Backlink is valuable but irrelevant: Consider outreach to the linking site for an updated link.
• Prioritize links worth reclaiming

Focus on:

• Links from authoritative domains
• Editorial links (articles, resource pages)
• Links with relevant anchor text
• Pages that previously ranked or drove traffic

For republishing specifically, I’d prioritize:

1. Ahrefs (fastest way to find broken inbound links at scale)
2. Semrush (good for ongoing monitoring)
3. Screaming Frog + Search Console (for validating fixes)
4. Wayback Machine (for reconstructing lost assets)

A useful tactic is to combine “broken backlinks” reports + your CMS publication history: find every old URL with valuable inbound links, then decide whether the new content should inherit that URL via update, redirect, or restoration.

Yes. For republishing old content and reclaiming backlinks, I’d prioritize tools that can identify external sites linking to URLs on your domain that now return 404s, redirect incorrectly, or have otherwise lost their link value.

Best tools

• ahrefs.com — best overall for this workflow. Its Site Explorer has a dedicated Broken backlinks report showing referring pages that point to your 404 URLs, with anchor text and surrounding context. You can also use Best by Links → HTTP code: 404 and sort by referring domains to find the highest-value old pages first. Ahrefs Help Center Ahrefs
• semrush.com — strong alternative. Backlink Audit has a Target URL Error filter for backlinks pointing to broken pages, while its indexed-pages/backlinks reports can surface broken pages receiving backlinks. Semrush Semrush
• moz.com — useful for backlink/lost-link analysis, particularly if you're already using Moz, although I'd pick Ahrefs first specifically for broken-backlink reclamation.
• search.google.com — good supplemental source. It won't give you the same comprehensive historical backlink intelligence as Ahrefs/Semrush, but it's worth checking alongside your backlink database.
• screamingfrog.co.uk — complementary rather than a backlink database. Use it to crawl your site after republishing and verify that old URLs, redirects, canonicals, and internal links are behaving correctly.

For your specific use case

I'd do this:

1. Export all your site's 404 URLs that have external backlinks.
2. Sort by referring domains, not just total backlinks.
3. Identify old articles that are being republished or substantially refreshed.
4. If the old URL is still the right URL, restore the page at the same URL. That's generally the cleanest reclamation.
5. If the content has moved, 301 redirect the old URL to the most closely matching new URL.
6. If you've created a substantially different replacement, look at the referring pages and contact the highest-value link sources asking them to update the link.
7. Re-crawl and verify that the old inbound links now resolve properly.

Ahrefs specifically recommends restoring broken pages or redirecting them to suitable alternatives to reclaim their value. Ahrefs Help Center

One particularly useful trick: don't only look at URLs that are currently 404. Check your lost backlinks too. A link can disappear because the referring page was removed, redirected, deindexed, or otherwise changed—not merely because your target URL died. Ahrefs exposes these different loss reasons. Ahrefs Help Center

If you're doing this at scale, Ahrefs + Screaming Frog would be my preferred combination: Ahrefs finds the backlink opportunities, while Screaming Frog verifies the technical state of the republished/redirected URLs.

For republishing old content, the goal is usually to find external pages that still link to old URLs, lost pages, or outdated versions so you can redirect, update, or outreach for link reclamation. These backlink tools are the most useful:

Best backlink tools for finding broken inbound links

1. Ahrefs — best overall for broken link reclamation

ahrefs.com

Useful reports:

• Site Explorer → Best by Links → filter HTTP code = 404 - Finds old pages on your domain that have backlinks pointing to dead URLs.
• Site Explorer → Broken Backlinks - Directly surfaces referring domains linking to broken pages.
• Lost Backlinks - Helps identify links you previously had that disappeared.

Good workflow:

1. Export broken URLs with referring domains.
2. Check whether the old page can be republished or improved.
3. Restore the page or 301 redirect it to the closest updated resource.
4. Contact high-value linking sites if needed.

2. Semrush — strong for backlink auditing

semrush.com

Useful features:

• Backlink Audit
• Indexed Pages report
• Lost & broken backlinks filters
• Referring Domains analysis

Semrush is especially helpful if you want to combine:

• backlink recovery
• toxic link review
• competitor backlink gap analysis

3. Majestic — good for link history

majestic.com

Strengths:

• Large historical link index
• Useful for older content that accumulated links years ago
• Good Trust Flow / Citation Flow metrics for prioritizing opportunities

4. Google Search Console — free first-party data

search.google.com

Less powerful for backlink discovery, but useful for:

• finding indexed old URLs
• checking crawl issues
• seeing pages Google still knows about

Pair it with a crawler like:

• Screaming Frog SEO Spider
• screamingfrog.co.uk

5. Moz Link Explorer — simpler backlink research

moz.com

Useful for:

• finding top linked pages
• discovering lost links
• checking link authority metrics

A practical republishing workflow

1. Find dead pages with backlinks

• Ahrefs: Broken Backlinks
• Semrush: broken/lost backlink reports
• Prioritize URLs

Focus on pages with:

• many referring domains
• links from authoritative sites
• relevant anchor text
• historical traffic
• Decide the recovery method

• Republish the same URL → best option when possible
• Improve and relaunch the content → good for outdated guides
• 301 redirect → when the old page is permanently replaced
• Recover links

• If the URL is restored: no outreach may be needed.
• If the destination changes: email important referring sites asking them to update the link.

For a content refresh/republication project, I’d typically start with Ahrefs + Screaming Frog: Ahrefs finds the link equity, and Screaming Frog helps validate the URL/crawl issues before you republish.

Yes. For republishing old content, the key is finding backlinks that point to URLs you’ve deleted, changed, or redirected—and then deciding whether to restore the old URL, 301 it, or ask the linking site to update the link.

Best tools for backlink reclamation

1. ahrefs.com — best overall

• Site Explorer → Backlinks → Broken backlinks shows referring pages linking to your 404 URLs, including anchor text and surrounding text. Ahrefs Help Center Ahrefs
• Best by Links → HTTP code: 404 lets you find your old/dead pages ranked by how many backlinks they have. Ahrefs
• Backlinks → Lost is useful for links that disappeared even though the destination page still exists. Ahrefs recommends filtering to its "best links" to prioritize worthwhile reclamation targets. Ahrefs
• This is probably the tool I'd use first for a content-republishing project.
• semrush.com — excellent alternative

• Backlink Audit has a Target URL Error filter for backlinks pointing to broken pages. Semrush
• Its backlink reports distinguish active, new, and lost links, with filters for lost-link reasons. Semrush
• Particularly useful if you're already using Semrush for keyword/content research.
• Google Search Console — useful, but not enough by itself

• I'd use GSC as a supplementary source for your current link data, but not as the primary reclamation tool. A dedicated backlink index is much better for discovering which external pages are linking to your old URLs.

The workflow I'd use

For a republishing project, I'd do this:

1. Export your old URLs.
Get URLs from your CMS, sitemap, Google Analytics/Search Console, Wayback Machine, or your old content inventory.

2. Put the domain into Ahrefs.

3. Find 404 pages with backlinks.
Go to Best by Links → HTTP code → 404 and sort by referring domains/backlinks. This immediately gives you a prioritized list of old content that still has external authority pointing at it. Ahrefs Help Center

4. Categorize each URL:

5. Prioritize by referring domains, not raw backlink count.
One old URL with 25 unique referring domains is generally more interesting than one with 200 links from a single site.

6. Then check the actual referring pages.
For your best opportunities, look at the linking page and determine whether the old content is still genuinely what they're trying to reference. If so, you have a very easy outreach pitch: "The resource you linked to has been republished here; would you mind updating the link?"

One especially valuable trick

Don't only look for 404s. Look for lost backlinks too.

Suppose an old article was republished at /new-url/, but 30 sites still link to /old-url/. If /old-url/ currently redirects poorly—or doesn't redirect at all—you may be sitting on a significant reclamation opportunity. Ahrefs specifically recommends restoring broken pages or redirecting them to relevant live pages to recover that link equity. Ahrefs Help Center Ahrefs

If you're doing this at scale, I'd pick Ahrefs. Its combination of Broken backlinks + Best by Links + Lost backlinks maps almost perfectly onto an old-content republishing/reclamation workflow.

Yes. If your goal is republishing old content and reclaiming backlinks that now point to dead/old URLs, I’d prioritize these:

1. ahrefs.com — best overall for this workflow

• Site Explorer → Broken backlinks shows referring pages linking to your 404 URLs.
• You can filter by referring-page DR, URL, anchor text, etc.
• Its Lost backlinks report is also useful for links that disappeared because a page was redirected, removed, became noindex, etc. Ahrefs Help Center Ahrefs Help Center
• Particularly useful for old content because you can identify which deleted/changed URLs still have valuable referring domains, then republish the content at the old URL or 301 it to the best current equivalent.
• semrush.com — strong alternative

• Tracks new, lost, and broken backlinks and can alert you when important links change. Semrush
• Its Target Pages report specifically lets you identify target URLs where backlinks are broken. Semrush
• Good choice if you're already using Semrush for your broader SEO workflow.
• semrush.com — useful for prioritizing reclamation

• Good for finding valuable lost links and investigating why they disappeared. Semrush

For republishing old content, I'd use Ahrefs like this

Your-domain → Site Explorer → Pages → Best by Links → filter HTTP code = 404.

That gives you your dead pages with backlinks. Sort by referring domains rather than just raw backlinks so you find pages with genuine link equity first. Ahrefs specifically recommends this approach for identifying broken pages worth restoring. Ahrefs

Then for each worthwhile URL:

• Old content still deserves to exist? Republish it at the original URL if possible.
• Content moved to a new URL? 301 the old URL to the closest equivalent.
• No longer relevant? Don't blindly redirect it to the homepage; either leave it 404/410 or find a genuinely relevant replacement.
• Backlink points to the wrong URL but your content exists elsewhere? Contact the referring site and ask them to update the link.

One important distinction

For your particular use case, don't just look for "lost backlinks." Look specifically for "broken backlinks to pages on your own site." A lost backlink can mean the external publisher removed the link, whereas a broken backlink can mean the publisher is still linking to you but your old destination is dead—which is often the easiest reclamation win. Ahrefs Help Center Ahrefs Help Center

If you're doing this at scale, Ahrefs + Google Search Console + Wayback Machine is probably the workflow I'd choose.

For republishing old content, the goal is usually to find backlinks that point to dead URLs, outdated URLs, or pages that lost value after a migration/rewrite—then reclaim that equity with redirects, updated outreach, or refreshed pages.

The strongest backlink tools for this are:

A common republishing workflow:

1. Export old URLs
   • Pull URLs from your CMS, sitemap history, analytics, or archive.
   • Identify pages that used to have traffic/backlinks.

2. Find broken backlinks
   • In Ahrefs:
     • Enter your domain.
     • Go to Pages → Best by Links.
     • Filter for 404 pages or use Broken Backlinks.
   • Export referring pages + anchor text + target URL.

3. Prioritize reclaim opportunities

Focus on:

• High-authority referring domains
• Links with relevant anchor text
• Pages that historically brought organic traffic
• Links pointing to URLs you can restore or redirect closely

4. Choose the fix
   • Republish the original article at the same URL if possible.
   • Create a 301 redirect from the dead URL to the closest updated page.
   • Contact the linking site if the page is valuable and ask them to update the link.

5. After republishing
   • Monitor:
     • New backlinks
     • Lost backlinks
     • Rankings
     • Referral traffic

For a content refresh program, I’d typically start with Ahrefs for backlink reclamation + Screaming Frog for crawl validation + Google Search Console for performance checks. That combination catches most reclaimable link equity.

Yes. For reclaiming backlinks to republished/updated content, I’d prioritize tools that let you identify links pointing to old URLs, broken URLs, and lost backlinks, then map those links to the new URL.

Best tools

The workflow I'd use

For an old-content republishing project:

1. Export your old URLs before changing anything.
2. Put each old URL into Ahrefs Site Explorer.
3. Look for:
   • 404 pages with backlinks
   • backlinks pointing to an old version of the article
   • lost backlinks
   • links to URLs that were changed during migration
4. Create a mapping:

old URL → new URL

5. If the content is substantially the same, put a 301 redirect from old → new.
6. For valuable backlinks where a redirect isn't ideal, contact the referring site and ask them to update the link directly.
7. Separately crawl your site for internal links pointing to the old URLs.

Biggest opportunity: don't just search for “broken inbound links.” Search specifically for 404 URLs on your domain that have referring domains/backlinks. Those can represent easy link equity to reclaim.

If you're republishing a large archive (hundreds/thousands of old articles), Ahrefs + Screaming Frog is probably the combination I'd start with.

Yes. For republishing old content, I’d prioritize tools that distinguish broken inbound links (someone links to a URL on your site that now returns 404) from merely “lost” backlinks.

Best options

1. Ahrefs Site Explorer — best overall
   • Broken backlinks report shows referring pages linking to your 404 URLs, including anchor text and surrounding text. help.ahrefs.comwww.semrush.com
   • Best by Links → HTTP code: 404 is particularly useful for old-content republishing because it lets you identify deleted pages that still have valuable inbound links. ahrefs.com
   • Its Lost backlinks report is useful for a second pass—links that disappeared even though the destination may still exist. ahrefs.com

2. Semrush Backlink Audit — good alternative
   • Its Target URL Error filter identifies backlinks pointing to broken pages. www.semrush.com
   • It also tracks new, broken, and lost backlinks, which is useful for monitoring a republishing project over time. www.semrush.com

3. Majestic — useful as a backlink-data supplement
   • I’d consider it more of a complementary backlink index than my first choice specifically for broken-link reclamation.

The workflow I'd use

For each old article you're considering republishing:

1. Export your site's 404 URLs with backlinks.
In Ahrefs, go to:

Site Explorer → yourdomain.com → Pages → Best by Links → HTTP code: 404

Then sort/prioritize by referring domains, URL Rating/authority, and relevance. ahrefs.com

2. Decide whether to restore, redirect, or ignore each URL.

• Same article/topic still makes sense: republish it at the old URL if possible.
• Content moved to a new URL: 301 the old URL to the new equivalent.
• You have a substantially updated version: republish/update and preserve the URL where practical.
• No relevant replacement: don't force a redirect just to capture a backlink.

Ahrefs specifically recommends restoring valuable broken pages or redirecting them to relevant pages. help.ahrefs.com

3. Look at the referring pages before deciding.
A 404 with 30 referring domains isn't necessarily valuable; one link from a highly authoritative, highly relevant publication can be more worth reclaiming than dozens of junk links.

4. Separately check “lost” backlinks.
For republishing, this catches another valuable bucket: pages where the backlink disappeared because of a site redesign, URL change, noindex, canonicalization, redirect, etc. help.ahrefs.com

One particularly good tactic

If you're republishing a large archive, I'd actually run this as a prioritization exercise:

404 URL → referring domains → referring-page quality → original topic → current replacement URL → action

That lets you find the old articles where republishing the content can simultaneously recover existing backlink equity and refresh the organic rankings.

If you tell me roughly how many old articles you have (e.g. 100, 1,000, 10,000), I can give you the most efficient Ahrefs/Semrush workflow and the exact filters I'd use.

Yes. For republishing old content, I’d focus on tools that can answer two questions:

1. Which old URLs have inbound links but now return 404s?
2. Which backlinks have disappeared or become broken since the content was published?

Best tools

1. Ahrefs — best overall for this workflow

Its Site Explorer → Backlinks → Broken backlinks report shows referring pages linking to your 404 URLs, including anchor text and surrounding text. You can also use Best by links → HTTP code: 404 to find your site's dead pages that have accumulated backlinks. help.ahrefs.comwww.semrush.comahrefs.com

For republishing, I'd specifically:

• Export your 404 URLs with referring domains.
• Identify which dead URLs correspond to content you're planning to republish.
• Restore the article at the same URL where possible.
• Otherwise, 301 the old URL to the closest relevant new URL.
• Prioritize URLs with strong referring domains / relevant links.

Ahrefs also has a Lost backlinks report, which is useful for finding links that existed previously but disappeared. ahrefs.com

2. Semrush — very good alternative

Semrush's Backlink Audit tracks new, broken, and lost backlinks and can specifically flag target URLs returning errors. Its Target Pages report distinguishes Broken and Lost backlinks. www.semrush.com

It's particularly useful if you're already using Semrush for your broader SEO workflow.

3. Moz — decent for backlink discovery

Moz Link Explorer is useful for backlink analysis and finding links to particular URLs, but for this exact "old URL → backlinks → reclaim during content refresh" workflow, I'd put Ahrefs and Semrush ahead of it.

The workflow I'd use

For a content-republishing project, I'd actually make a "backlink recovery" pass before publishing anything:

The important distinction is that "broken inbound links" and "lost backlinks" aren't the same thing. A broken backlink usually means someone still links to you, but the destination is dead; that's often the easiest win because you don't need the publisher to add a new link—you just need to make the destination work again. Ahrefs explicitly recommends restoring the broken page or redirecting it to a relevant alternative. help.ahrefs.comwww.semrush.comahrefs.com

For your particular use case, I'd pick Ahrefs if you're buying one tool. Its combination of 404 pages with backlinks + lost backlinks + referring-page context maps almost exactly to a content-republishing/link-reclamation process. ahrefs.com

If you tell me whether you're republishing dozens, hundreds, or thousands of old URLs, I can also give you the most efficient workflow for doing the reclamation at that scale.

Yes. For republishing/refreshing old content, I’d prioritize tools that can tell you which external sites still link to URLs that are now 404/redirecting incorrectly. Those are the easiest links to reclaim.

Best tools

1. Ahrefs — best overall for this
   • Site Explorer → Backlinks → Broken shows referring pages linking to your 404 URLs.
   • You can also use Pages → Best by Links → HTTP code: 404 to find your dead pages with the most backlinks.
   • Filter by referring-page DR, URL, anchor text, etc., to prioritize valuable links. help.ahrefs.comwww.semrush.com
   • Ahrefs also has a free Broken Link Checker that specifically surfaces linked-to dead pages. ahrefs.com

2. Semrush — good second source
   • Backlink Audit includes new, lost, and broken backlink data and alerts for changes.
   • Its Lost & Found reporting is useful for identifying links that disappeared while you're auditing an older content library. www.semrush.com

3. Moz Link Explorer — useful cross-check
   • Good for validating referring domains and link authority after you've identified candidates.
   • I'd use it as a second database rather than the primary broken-link workflow.

The workflow I'd use for old-content republishing

Ahrefs → find 404s → prioritize → republish/redirect → verify backlinks.

For each old URL:

1. Pull all URLs on your site returning 404.
2. Sort those URLs by number/quality of referring domains.
3. Identify URLs where the old content is worth bringing back.
4. Republish the content at the original URL if possible. That's usually the cleanest reclamation.
5. If the content has moved permanently, 301 redirect the old URL to the most closely matching new URL.
6. For especially valuable links, contact the referring site and ask them to update the URL.
7. Afterward, re-crawl/check the backlink to make sure it resolves correctly.

Ahrefs explicitly recommends restoring broken pages or redirecting them to relevant alternatives to reclaim the value of those backlinks. help.ahrefs.com

One important distinction: don't confuse broken inbound links with broken outbound links. For your use case, you want other websites → your old/404 URLs. Ahrefs calls these broken backlinks. help.ahrefs.com

If you're doing this at scale, I can also give you a repeatable “old content → backlinks → republish vs. 301 vs. ignore” prioritization process, including the metrics I'd use to decide which 404s are worth recovering.

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

Yes. For republishing old content, I’d focus on tools that can identify external pages still linking to URLs that now 404, redirect poorly, or point to an outdated version of the content.

Best tools for backlink reclamation

1. Ahrefs — probably the best fit
   • Site Explorer has a dedicated Broken backlinks report showing referring pages linking to your 404 URLs.
   • You can filter/prioritize by things like referring-page authority, anchor text, and URL.
   • It also has a Best by Links → 404 workflow, which is useful when you've republished a large archive and want to identify the old pages with the most valuable inbound links. help.ahrefs.comahrefs.com
   • Ahrefs also has a free Broken Link Checker for finding your most-linked dead pages. ahrefs.com

2. Semrush
   • Backlink Audit has a Target URL Error filter specifically for backlinks pointing at broken pages.
   • Its Target Pages report distinguishes broken and lost backlinks, which is useful for separating "the page is dead" from "the link disappeared."
   • Semrush's Backlinks database also has a Broken Pages filter. www.semrush.com

3. Google Search Console
   • Worth using as a supplement, especially because it's first-party data from Google.
   • I wouldn't rely on it alone for reclamation, though: dedicated backlink indexes generally give you much better referring-page/anchor-text information and historical discovery.

The workflow I'd use

For a republishing project, I'd do this in Ahrefs first:

Old URL inventory → 404 pages → referring domains/backlinks → prioritize valuable links → restore/redirect → verify

For example:

/old-study.html → 404
↓
47 external backlinks
↓
8 referring domains worth reclaiming
↓
Republish equivalent content at /new-study/
↓
301 /old-study.html → /new-study/

That's preferable to simply deleting the old URL because the redirect can preserve the value of relevant inbound links. Ahrefs specifically recommends restoring the old page or redirecting it to a relevant alternative. help.ahrefs.comahrefs.com

One important distinction: if you're republishing the same content at a new URL, don't only look for links to 404s. Also look for lost backlinks where the linking page still exists but the publisher removed/changed the link. Semrush explicitly supports this kind of lost-backlink analysis. www.semrush.com

If you tell me whether you're republishing dozens, hundreds, or thousands of URLs, I can give you the most efficient reclamation workflow (including the exact Ahrefs/Semrush filters and prioritization formula).

Yes. For republishing old content, I’d focus on tools that can distinguish broken/lost backlinks to your old URLs from merely “low-quality” links.

Best tools for backlink reclamation

1. Ahrefs — best overall
   • Site Explorer → Backlinks → Broken backlinks shows referring pages linking to your 404 URLs, including anchor/context. help.ahrefs.com
   • Best by Links → HTTP code: 404 is particularly useful for finding old pages that accumulated backlinks before being removed. ahrefs.com
   • Backlinks → Lost finds links that disappeared for other reasons, not just 404s. ahrefs.com
   • For your use case, I'd probably start here.

2. Semrush — strong alternative
   • Backlink Audit tracks new, broken, and lost backlinks and can alert you to significant changes. www.semrush.com
   • Its Lost Backlinks workflow lets you investigate why a link disappeared, including cases where the linking page was deleted or redirected. www.semrush.comahrefs.com

3. Google Search Console — useful free baseline
   • The Links report shows external links to your site and lets you drill into top-linked pages and linking sites. support.google.com
   • But it isn't comprehensive and doesn't specifically identify broken backlinks, so I'd use it as a cross-check rather than your primary reclamation tool. support.google.com

The workflow I'd use for old-content republishing

Ahrefs → identify old URLs with valuable backlinks → decide whether to restore, redirect, or republish → reclaim the referring links.

For example:

/old-article/ → now 404 → 37 referring domains → 8 high-authority sites

If your new version is substantially the same resource, I'd generally 301 the old URL to the new URL rather than asking 37 publishers to change their links. If the old URL can simply be restored at the same address, that's even cleaner. Ahrefs specifically recommends restoring the broken page or redirecting it to a relevant replacement. help.ahrefs.comwww.semrush.comahrefs.com

Then separately look at lost backlinks where the destination still exists. Those are outreach opportunities: the publisher may have removed your link, changed the article, or redirected their page. www.semrush.comahrefs.com

One important distinction: if by “republishing old content” you mean taking an old article, updating it, and publishing it at a new URL, I would audit the old URL's backlinks before publishing. That's where you can uncover a lot of easy link equity that would otherwise get stranded.

If you tell me what SEO stack you already have (Ahrefs, Semrush, Moz, GSC, Screaming Frog, etc.), I can give you the fastest exact workflow and filters for finding the highest-value reclamation opportunities.

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

For reclaiming backlinks when you're republishing, consolidating, or restoring old content, the goal is to identify links pointing to URLs that now return 404s, 410s, or redirect poorly. Here's how the major tools compare:

My preferred workflow (especially for content refresh projects)

1. Ahrefs → Best by Links → 404
   • This is the fastest way to find pages that have accumulated backlinks but are currently dead.
   • Sort by:
     • Referring Domains
     • Dofollow links
     • URL Rating

2. Export the list

You'll get something like:

   /ultimate-guide-2020
   /seo-checklist-old
   /pricing-comparison

3. Decide for each URL:
   • republish at the original URL
   • restore the page
   • 301 redirect to the closest equivalent
   • merge into a newer guide

4. After republishing, recrawl the site and verify the backlinks now resolve correctly.

If you've changed URLs

Ahrefs' Broken Backlinks report is extremely useful because it tells you:

• referring page
• anchor text
• target URL
• HTTP status
• referring domains

Often you'll discover things like:

/blog/content-strategy-2019
→ 404
82 referring domains

That's an easy win: restore or redirect that page. ahrefs.comahrefs.com

For large editorial sites

I'd combine:

• Ahrefs (discovery)
• Screaming Frog (crawl validation)
• Google Search Console (confirm Google's view)
• Server logs (optional, to see if bots are still requesting old URLs)

That catches almost every reclaim opportunity.

Bonus: find pages worth republishing

One of my favorite reports in Ahrefs is:

Best by Links

Sort by:

• Referring Domains
• HTTP status = 404

You'll often find forgotten articles with dozens or hundreds of backlinks that can regain traffic simply by restoring them.

For content marketing teams, this report frequently produces a higher ROI than creating entirely new content because the authority is already there. ahrefs.comahrefs.com

For reclaiming backlinks to republished/updated content, the most useful tools are:

• Ahrefs — best overall for finding broken backlinks, lost backlinks, and referring pages that still point to an old URL.
• Semrush — strong for backlink audits and identifying lost/broken links at scale.
• Majestic — useful when you want another link-index perspective, especially for historical backlink data.
• Google Search Console — useful for seeing links Google knows about, but it’s less comprehensive for identifying reclaimable broken inbound links.
• Screaming Frog — great as a companion tool: crawl your own site to find 404s/redirects, then cross-reference those URLs with backlink data.

A practical reclamation workflow

1. Export your site's 404 URLs and old URLs.
2. Put those URLs into Ahrefs/Semrush and look for referring domains/backlinks.
3. Prioritize links from relevant, authoritative pages.
4. Check whether the old URL should:
   • 301 → the republished page,
   • redirect → a more appropriate replacement, or
   • remain 404 if there genuinely isn't a relevant replacement.
5. For valuable links, contact the referring site and ask them to update the destination URL.

If you only want one tool: I'd use Ahrefs, particularly its Site Explorer → Best by Links / Broken Backlinks workflows. It makes the “old URL → pages still linking to it → reclaim with redirect/update” process fairly straightforward.

For reclaiming backlinks to republished/updated content, the most useful tools are:

• Ahrefs — excellent for finding backlinks pointing to old/dead URLs, lost backlinks, and referring pages. Its Best by links and broken-backlink workflows are especially useful.
• Semrush — good for backlink audits and identifying links to pages that now return 404s or have changed URLs.
• Google Search Console — useful as a free supplement for seeing links Google associates with your site, though it’s less comprehensive for historical/broken-link reclamation.
• Majestic — strong backlink index and useful for analyzing referring domains and link history.
• Screaming Frog SEO Spider — particularly helpful when you already have a list of old URLs and want to verify redirects, 404s, and where links are landing.

A practical workflow: export your old URLs → find backlinks pointing to those URLs → filter for valuable referring domains → check whether the old URL is 404/redirected → create a relevant 301 redirect or restore the content → contact the referring site when a direct link update is worthwhile.

If you're specifically doing content republishing at scale, I'd lean toward Ahrefs + Screaming Frog: Ahrefs for discovering reclaimable links and Screaming Frog for validating the URL/redirect side.

For republishing old content, the most useful tools are the ones that let you compare old URLs vs. current URLs, find backlinks pointing to dead pages, and identify links you can redirect or ask publishers to update.

• Ahrefs — probably the best all-around choice. Use Site Explorer → Best by links on your old/dead URLs, then inspect referring domains and anchor text. Its Broken backlinks report is especially useful for finding links pointing to 404 pages.
• Semrush — good for backlink auditing and identifying broken pages that still have referring links. Its Backlink Audit and backlink analytics can help prioritize reclamation opportunities.
• Google Search Console — free and useful for seeing which of your current pages receive links, but it isn't as comprehensive for historical/broken inbound links as Ahrefs or Semrush.
• Majestic — particularly useful if your focus is link discovery and historical backlink data.
• Screaming Frog SEO Spider — useful as the second half of the workflow: crawl your site to find 404s/redirects, then combine those URLs with backlink data from Ahrefs/Semrush/Majestic.

A practical reclamation workflow

1. Export your old URLs from your CMS, sitemap, analytics, or archive.
2. Put those URLs into Ahrefs/Semrush and identify which have external backlinks.
3. Prioritize URLs that have:
   • Multiple referring domains
   • Strong/high-quality referring sites
   • Relevant backlinks
   • Existing 404 status
4. Republish the strongest content at the old URL if the content still serves the same intent.
5. If the URL changed, implement a 301 redirect from the old URL to the most equivalent new page.
6. For particularly valuable links, contact the referring site and ask them to update the destination URL.
7. Crawl the site afterward to make sure you don't have redirect chains, 404s, or accidental canonical/indexing issues.

If you're choosing just one: I'd start with Ahrefs for this particular job because its broken-backlink workflow makes it easy to go from dead URL → referring pages → reclaimable links.

For republishing old content, the most useful backlink tools are the ones that let you find lost/broken inbound links pointing to outdated URLs, then decide whether to restore the page, redirect it, or reclaim the link with outreach.

Here are the strongest options:

A practical workflow for republishing old content

1. Find broken inbound links
   • Export URLs with:
     • HTTP status = 404
     • Referring domains > 0
     • Good authority/relevance

2. Match old URLs to new content
   • If the old page is being republished:
     • Restore the same URL if possible.
     • Otherwise create a 301 redirect from the old URL to the updated page.

3. Prioritize reclaim opportunities

Focus on:

• High-authority referring domains
• Links from relevant articles
• Links with descriptive anchor text
• Pages that previously ranked or drove traffic

4. Do outreach for valuable links

Example:

“I noticed your article still links to our old resource on [topic]. We recently updated it with new data and examples. Would you consider updating the link?”

My usual stack for this specific task

• Ahrefs → fastest way to find broken inbound links
• Screaming Frog → verify site issues and redirects
• Google Search Console → confirm indexing/crawl impact
• Semrush → useful if you also want competitor link reclamation

If you have a large archive of old posts (hundreds/thousands), Ahrefs’ Broken backlinks report is usually the highest-leverage starting point.

For republishing old content, the most useful backlink tools are the ones that let you find lost/broken inbound links pointing to old URLs (404s, moved pages, outdated URLs) so you can reclaim that authority with redirects, updated pages, or outreach.

Best backlink tools for finding reclaimable broken inbound links

A practical reclaim workflow

1. Export broken backlinks
   • In Ahrefs:
     • Site Explorer → enter domain
     • Best by Links → filter 404
     • Export referring pages
   • Prioritize:
     • High-authority referring domains
     • Relevant anchor text
     • Pages that had many referring domains

2. Map old URLs to new assets

Create a spreadsheet:

3. Choose the recovery method
   • Republish the same topic → restore the old URL if possible
   • Improved replacement exists → 301 redirect old URL
   • High-value links from relevant sites → outreach asking them to update the link

4. Look for “almost lost” opportunities

Also check:

• Pages with many backlinks but declining traffic
• Old content with strong referring domains
• Competitor broken backlinks (often called broken link building)

If you’re specifically republishing old blog posts

A strong stack is:

• Ahrefs → find broken inbound links
• Google Search Console → confirm historical performance
• Screaming Frog → verify redirects and internal links
• Wayback Machine → recover old copy/structure

For a content refresh program, I’d usually start with Ahrefs’ broken backlinks report because it directly surfaces pages where you can regain existing link equity rather than chasing new links.

If you're republishing, consolidating, or changing URLs, broken inbound links are one of the highest-ROI things to fix. The goal is to find external sites that used to link to your content but now point to 404s, redirects, or outdated URLs so you can reclaim that link equity.

Here are the tools that are most useful, ordered by strength for this specific workflow:

1. Ahrefs (my first choice)

This is probably the fastest workflow.

Go to:

• Site Explorer
• Best by Links
• Filter → HTTP code = 404
• Sort by Referring Domains

You'll immediately see pages that no longer exist but still have backlinks.

Prioritize pages with:

• many referring domains
• editorial links
• high DR referring sites
• traffic history

Then either:

• restore the old page
• redirect it to the closest equivalent
• recreate the content at the old URL if possible

Ahrefs also has:

• Lost Backlinks
• Broken Backlinks
• Best by Links
• Internal Backlinks reports

Those four reports together usually uncover most reclaim opportunities.

2. Semrush

Useful reports:

• Backlink Audit
• Indexed Pages
• Broken Pages
• Referring Domains

Their "Broken Pages" report is especially useful if you're cleaning up an old blog before republishing.

3. Majestic

Majestic shines when content has been online for years.

Its historic index often shows links that newer crawlers have forgotten.

This is useful when:

• an old blog disappeared
• URLs changed multiple times
• you're migrating a large archive

4. Google Search Console

People often overlook this.

Look at:

• Pages → Not Found (404)
• Links → External Links

Cross-reference those reports.

If Google keeps reporting a missing page that has external links, it's a candidate for recovery.

5. Screaming Frog

After deciding what to reclaim:

• crawl the site
• verify redirects
• ensure old URLs return either:
  • 301 → new page
  • or 200 if restored

It catches redirect chains that waste link equity.

If you're republishing old blog posts

A workflow I use looks like:

1. Export all URLs.
2. Check which now return 404.
3. Find backlinks pointing to those URLs.
4. Sort by referring domains.
5. Restore or redirect high-value pages.
6. Update internal links.
7. Request indexing of the updated pages.

Bonus tools

These can uncover additional opportunities:

• BuzzSumo — find older content that earned lots of shares and links.
• Internet Archive Wayback Machine — recover the original content of deleted pages before recreating them.
• SEOTesting — compare search performance before and after republishing.

If I were doing a large-scale content refresh

For a site with hundreds or thousands of posts, I'd use:

• Ahrefs to identify 404 pages with valuable backlinks.
• Google Search Console to confirm Google's view of crawl errors and external links.
• Screaming Frog to validate redirects and internal linking after changes.
• Wayback Machine to reconstruct high-value deleted content when the original is no longer available.

That combination typically identifies the majority of reclaimable backlink opportunities while helping ensure the fixes are implemented cleanly.

For republishing old content, the most useful backlink tools are the ones that can show you lost/broken inbound links pointing to old URLs (especially URLs you plan to update, merge, or redirect). You’re looking for workflows like: “Which external sites linked to this old page? Does that link now 404 or point nowhere? Can we reclaim the equity?”

Best backlink tools for finding reclaimable broken inbound links

A practical reclaim workflow

1. Export old URLs
   • Pull URLs from:
     • old blog archives
     • CMS exports
     • sitemap history
     • Google Analytics/Search Console landing pages
     • old campaigns

2. Find backlinks to those URLs
   • In Ahrefs/Semrush/Majestic:
     • Filter for:
       • HTTP status: 404
       • Lost backlinks
       • Referring domains
       • High-authority links

3. Prioritize opportunities

Focus on:

• Links from relevant websites
• Pages with many referring domains
• Links using descriptive anchor text
• URLs that match content you are republishing

4. Choose a reclaim method
   • Republish at the same URL → easiest; links recover automatically
   • 301 redirect old URL → updated article → preserves equity
   • Contact linking site → ask them to update the URL if the destination changed
   • Create a better replacement resource → for outdated content

A useful shortcut: look for “broken backlinks” reports

Many SEO teams start with:

• Ahrefs → Best by Links → Broken
• Semrush → Indexed Pages + Backlinks
• Screaming Frog → crawl old URLs + status codes
• GSC → top linked pages + declining pages

For a content refresh program, I’d usually combine Ahrefs (or Semrush) + Screaming Frog + Search Console: one finds the external links, one finds technical breakage, and one confirms Google’s view of the site.

If you’re republishing old content and want to reclaim lost link equity, you’re looking for tools that can find broken inbound backlinks (external links pointing to dead URLs on your site) and help you map them to updated pages or redirects.

Here are the strongest options:

A practical workflow for republishing old content

1. Export broken backlinks
   • In Ahrefs/Semrush/Majestic, find:
     • Status: 404 / broken destination
     • Referring domains: prioritize authoritative sites
     • Anchor text: see what the old page was about

2. Match old URLs to republished content
   • If the new article covers the same topic:
     • Restore the old URL if possible, or
     • Create a 301 redirect from the old URL to the new URL

3. Prioritize links worth reclaiming

Focus on:

• High-authority referring domains
• Links from relevant pages
• Pages with many inbound links
• URLs that previously ranked or received organic traffic

4. Find “almost lost” opportunities

Also look for:

• External links pointing to redirected URLs
• Old URLs with backlinks but no replacement page
• Unlinked brand mentions (often found in Ahrefs Content Explorer or Semrush tools)

For a content republishing project, a common stack is Ahrefs + Screaming Frog: Ahrefs finds the lost link equity, and Screaming Frog helps validate the URL/redirect fixes.