Broken Link Building: How to Turn Other Sites' Dead Links Into Your Backlinks

What is broken link building?

Broken link building is a link-earning tactic where you locate a dead page — one returning a 404 or otherwise no longer live — that other websites still link to, then contact those sites and suggest they replace the broken link with a link to a relevant, live page on your own site. The value exchange is straightforward: they fix a broken link on their page, and you earn a backlink.

It differs from most other link tactics because you're not creating something and hoping someone links to it out of goodwill. You're identifying an existing problem — a link that already fails the person clicking it — and offering the site owner a ready-made solution. That single difference is why response rates on broken link outreach tend to beat generic guest-post or content pitches.

Why it still works in 2026

Broken link building still works in 2026 because dead links remain a genuine, ongoing problem: sites get redesigned, content gets deleted, businesses shut down, and nobody proactively re-checks years of old outbound links, which means the supply of exploitable 404s never really runs dry. Google's own guidance on how 404 errors affect a site confirms unresolved dead links create a poor user experience, giving site owners a real incentive to fix the ones you flag for them.

It also sidesteps the resistance most outreach runs into. You're not asking an editor to make space for new content or take a chance on an unfamiliar brand — you're flagging something already wrong on their page. That framing turns the ask from 'do me a favour' into 'here's a quick fix,' which is a much easier email to say yes to.

Where to find broken pages worth targeting

Find broken pages worth targeting by pulling backlink data for resource pages, competitor sites and authoritative pages in your niche through a backlink checker, then filtering for URLs returning a 404 that still have live referring domains pointing at them — the more domains linking to a dead page, the more valuable fixing it becomes.

Resource and 'further reading' pages are usually the richest hunting ground, since they exist specifically to list external links and rarely get revisited once published. Competitor backlink profiles are useful too: if a competitor used to publish a guide that's since been taken down or moved, every site still linking to the old URL is a live prospect. This is manual, list-building work in the same spirit as backlink building generally — the tactic only pays off if you follow through on the prospecting.

The Ahrefs guide to broken link building lays out a similar four-step process — find dead pages with backlinks, vet them, build or identify a replacement, then do outreach — and is worth reading in full if you plan to run this at scale.

• Check resource, 'further reading' and links pages in your niche for dead outbound links
• Pull competitor backlink profiles and look for old URLs of theirs that now 404
• Use a backlink tool's broken-link or 404 filter to scan a target site's whole outbound link footprint
• Prioritise dead pages with links from many distinct, relevant domains, not just one
• Keep a running list — this is prospecting you'll want to revisit, not a one-time pass

How to vet a broken link before you pitch it

Vet a broken link by confirming the page genuinely still 404s, checking that the site linking to it is real and editorially run rather than a link farm, and making sure your own live page is a close enough topical match that swapping in your link is an obviously reasonable edit for the site owner to make.

Skip anything where the topical fit is a stretch — a site owner will happily fix a dead link with a close replacement, but won't swap in something unrelated just because you asked. If you don't already have a page that fits, it's often faster to build one through SEO content writing than to force a mismatched page into the pitch and get ignored.

• Re-check the URL yourself — some 'broken' links redirect or have since been restored
• Confirm the linking site is active, real and editorially run, not an abandoned or low-quality domain
• Make sure your replacement page covers the same topic closely enough to be an easy swap
• Skip low-relevance matches rather than forcing a pitch that won't land

Writing outreach that actually gets replies

Write broken-link outreach that gets replies by keeping the email short, naming the exact page and the exact dead link you found, and framing the ask as a favour to them — you're helping them fix their site — rather than as a request on your behalf.

Lead with the problem, not your pitch: tell them which page has the broken link and where on the page it sits, so they don't have to go hunting for it. Only then suggest your page as a replacement, briefly explaining why it fits. Backlinko's outreach guidance makes the same point — skip generic templates that could apply to any dead link on any site, since the pitches that get replies read like they were written by someone who actually opened the page.

• Open with the specific page and the specific broken link — proof you actually checked
• Keep the email to a few sentences; this is a quick favour, not a proposal
• Suggest your page as the fix and say briefly why it's a good match
• Follow up once, politely, after a week or two — most replies come from a nudge, not the first email

Common mistakes and how to measure results

The most common mistake is pitching a page that's only loosely related to the dead link, which reads as opportunistic rather than helpful and gets ignored or reported as spam. The second is skipping the topical-fit check and mass-emailing every site linking to a dead URL regardless of relevance, which tanks reply rates for the whole campaign.

Measure results the way you would any other link programme: track placements against the original prospect list, note reply and conversion rates so you can refine future pitches, and periodically re-check that placed links are still live, since sites can redesign again and break the same link a second time. Folding broken link building into a broader SEO consulting programme, alongside niche edits and guest posting, spreads the acquisition risk across several link-earning methods instead of leaning on just one.