Broken Link Building: How It Works and When It’s Worth It

Broken link building means finding links on other sites that point to pages which no longer exist, then offering your own content as a working replacement. It’s one of the oldest link building tactics still standing, and it survives because the mechanic is genuinely helpful rather than merely clever: dead links frustrate readers, make a page look neglected, and most site owners want them fixed. The skill is in finding the right broken links and having a genuinely suitable replacement ready, not in the outreach itself.

Finding broken links worth pursuing

Start from resources that have disappeared

Look for once-popular pages in your niche that no longer exist: closed businesses, deleted guides, retired tools, discontinued products. In your SEO tool, check which sites still link to those dead URLs — each one is a prospect, and the fact that many sites linked to the same resource tells you the topic was in demand.

Scan resource and link pages

Resource pages accumulate dead links faster than most page types, because they’re link-only pages that get updated less often than the sites they point to. A link checker browser extension surfaces broken links on any page you visit in seconds, which pairs naturally with the prospecting described in resource page link building.

Check competitor backlink profiles for gaps

Run the target-URL-status filter in your competitor backlink analysis for 404s. Sites that once linked to a competitor’s now-dead page are candidates for your equivalent content, provided yours genuinely covers the same ground.

Create a genuine replacement

Before pitching anyone, look at what the dead page actually covered — a web archive snapshot usually shows the original content — and make sure your replacement addresses the same need, ideally more completely and more currently. Pitching a loosely related page because it happens to rank rarely works and damages your credibility with the site owner for future outreach.

Outreach that leads with the favour

The most effective broken-link emails open with the problem, not the ask. Tell the site owner which link is broken, on which page, and what error it shows, then offer your resource as one possible fix, framed as optional. Keep it to a handful of sentences and avoid attaching files or images. Lead with the helpful part and the pitch reads as a favour rather than a request.

When broken link building is worth the effort

Situation	Worth pursuing?
A well-known resource in your niche has disappeared and many sites still link to it	Yes — high leverage, one asset serves many prospects
Scattered one-off broken links across unrelated sites	Rarely — time per link is too high
You can build a genuinely better, current replacement	Yes
You’d need to force-fit an unrelated page	No — skip it, the reply rate will be poor anyway

Reclaim your own broken links first

Before chasing links on other people’s sites, check which of your own old URLs return a 404 but still have backlinks pointing at them, and redirect those to the most relevant live page. That’s broken link building applied to your own site, and it’s the fastest win available because the link is already earned — see reclaiming links to 404 pages for the full process.

Combine it with other tactics

Broken link building rarely stands entirely on its own. It works well stacked with the skyscraper technique, since a genuinely improved version of a dead resource is exactly the kind of content that earns a replacement link, and with finding guest post opportunities, since many resource-page owners are also open to contributed content once you’ve established contact by fixing a broken link for them.

Measuring whether it’s paying off

Track links earned per hour spent, not just links earned. If your ratio is poor after a genuine attempt, the likely cause is either a weak replacement asset or prospects that were never a strong fit to begin with — both are worth fixing before you scale the outreach volume further. For sites where you’d rather buy a placement directly instead of chasing a dead link, the marketplace lists publishers by niche with authority and traffic metrics attached.

Tools and workflow

You don’t need expensive software to run this at a small scale: a link checker extension, a spreadsheet, and a web archive lookup cover most of it. At larger scale, an SEO tool that flags broken outbound links on prospect sites and lets you filter your own backlinks by target status saves hours. Keep a simple tracker with columns for the dead URL, the linking site, contact status and outcome, so you can see which prospects actually converted and refine your targeting over time. Revisit dormant prospects every few months, since resource pages are sometimes updated in batches and a page that ignored you in January may fix its links in June.

A realistic view of effort versus reward

Broken link building rewards patience more than volume. A campaign built around one strong replacement asset and a tightly qualified list of twenty genuine prospects will usually outperform five hundred generic emails sent against a loosely related keyword. Treat it as an ongoing, low-intensity channel you run in the background rather than a one-off sprint, and it will keep producing a trickle of relevant, genuinely earned links long after the initial campaign is finished.

Where to go next

Read outreach email templates for the exact wording that works across broken-link, resource-page and unlinked-mention emails, and outreach follow-ups for how hard to push after the first email.

Frequently asked questions