Broken Link Building: Turn Dead Links Into Backlinks

August 23, 2026 · 8 min read · Broken Link Checker team

Broken link building is a backlink acquisition tactic with a simple trade at its core: you find a dead link on a relevant website, you have (or create) content that covers what the dead page covered, and you email the site owner — "this link on your page is broken; here's a working replacement." They fix an error on their site; you earn a backlink. It works because you're not asking for a favor — you're delivering one, with the ask attached.

Why this tactic keeps working

Most link outreach fails because it offers the recipient nothing. Broken link building inverts that. Dead links are a real, embarrassing problem — they frustrate visitors and make a page look unmaintained (see what broken links do to SEO) — and the supply never runs out, because link rot is constant: Pew Research found 38% of pages from 2013 gone within a decade. Every resource page, every "further reading" list, every bibliography on the web is quietly accumulating dead entries. Each one is an opening.

Two honest caveats before the process. First, response rates are low — well-run campaigns convert in the low single digits to maybe 5–10% of contacted sites; this is a volume-and-quality game, not a magic trick. Second, the replacement content has to genuinely deserve the link. If your page is a thin imitation of what died, the webmaster will notice, and so will the next SEO who emails them.

The process, step by step

Step 1: find pages likely to contain dead links

You're hunting for link-dense, aging pages in your niche. The classic sources:

• Resource and links pages. Search for your topic plus patterns like intitle:"resources", intitle:"useful links", inurl:links. These pages exist to link out — often dozens of links, often years old. Prime rot territory.
• Dead pages your competitors' backlinks point to. In any backlink tool, look at a competitor's most-linked pages and filter for URLs that now 404. Every site linking to that dead page is a prospect — you're offering to replace a link they already chose to make.
• Wikipedia's dead citations. Wikipedia marks broken references with a "dead link" tag; articles in your niche list them openly. Wikipedia links are nofollow, but the same citations get copied by writers everywhere.
• Curated lists and roundups in your topic — "best tools for X," "50 guides to Y." Old roundups rot like resource pages do.

Step 2: verify which links are actually dead

This is the mechanical part, and where a page-level scanner earns its keep. Open each candidate page in Chrome, run Broken Link Checker, and in a few seconds you have every link on the page tested — 404s and dead domains flagged, working links confirmed. Two details matter here:

• Don't trust a list of "broken" links from a bulk tool without verification. Sites behind aggressive firewalls answer crawlers with 403s while working fine for humans; pitching a webmaster to "fix" a link that isn't broken torches your credibility in one email. Use a checker that separates bot-blocked links from dead ones, and spot-check in a normal tab.
• Export as you go. A CSV of each page's dead links becomes your outreach worksheet: prospect URL, dead link, anchor text, your proposed replacement.

Step 3: see what the dead page used to say

Before you can offer a replacement, you need to know what died. Paste the dead URL into the Wayback Machine and read the archived copy. Now you know exactly what the linking site meant to point at — its topic, depth, and angle.

Step 4: create (or match) the replacement

Three situations, in ascending effort:

1. You already have a page that covers it. Perfect — proceed to outreach.
2. You have something close. Upgrade it until it's an honest substitute for the archived original — cover what the dead page covered, then improve on it (fresher data, better examples).
3. You have nothing. Decide whether the prospect list justifies creating it. If twenty sites link to one dead guide, one great replacement page has twenty warm prospects. If two sites do, skip it.

Step 5: outreach — short, specific, useful

The email that works is three sentences long and leads with their problem, not your request:

Rules of thumb: report the broken link accurately (page, anchor, status), offer exactly one replacement, and keep the "either way" genuine — some owners will fix the link without linking you, and that's the cost of the tactic being honest. Mentioning several broken links you found on their page raises the value of the email and your odds.

Step 6: track and follow up once

Log every email: prospect, date, dead link, your URL, outcome. One polite follow-up after a week is fine; more is spam. Expect most emails to be ignored — the tactic pays through the persistent minority who answer, and through the side effect that you now know your niche's link landscape better than anyone.

Mind your own glass house

The uncomfortable flip side: while you pitch others about their dead links, your own site is rotting at the same background rate. Before running a campaign, scan your own key pages — an outreach target who clicks through to a site with broken links of its own has an easy reason to ignore you. And redirect your own dead URLs that have inbound links (how) — that's link reclamation, the zero-outreach cousin of this tactic, and it should come first.

The one-page summary