Broken link building, step by step

Broken link building is one of the oldest tactics in SEO, and one of the most misunderstood. The premise is simple: pages disappear all the time, the links pointing at them break, and the people hosting those broken links would usually rather fix them than leave a dead end for their readers. Your job is to find those broken links, offer a genuinely useful replacement on your own site, and make swapping the link the path of least resistance. Done lazily, it is a numbers game that annoys editors. Done well, it is one of the more defensible white-hat ways to earn editorial links, because you are solving a real problem rather than asking for a favor. This guide walks through the full workflow as we run it: how to find broken links worth pursuing, how to qualify them before you spend a minute on content, how to build or match the replacement, and how to write outreach that actually gets a reply. For the wider strategy, see our the link building process.

What broken link building is and why it works

Broken link building is the practice of finding links that point to dead pages, then persuading the site owner to replace the dead link with a working link to a relevant resource on your site. A link is broken when its destination no longer loads, most commonly returning a 404 Not Found error because the page was deleted, moved without a redirect, or sat on a domain that lapsed.

A psychological edge

The reason it converts better than most blogger outreach is psychological as much as practical. The majority of link requests ask for something and offer nothing in return. Broken link building flips that. You open by pointing out a fault on the recipient’s page, something they have a clear incentive to fix, and only then suggest your page as the replacement. You are doing them a small favor first. That reframing is the entire advantage. If you are still getting to grips with how links influence rankings, our guide to backlinks sets the foundations.

A structural reality

It also taps a structural reality of the web. Ahrefs found that 66.31 per cent of pages have zero backlinks, so the pages that do attract links are comparatively scarce and valuable. When one of those linked pages dies, the links pointing at it are effectively orphaned, and inheriting even a fraction of them is worth the effort.

How to find broken links worth pursuing

There are four reliable ways to surface broken pages that still hold links. Most of them lean on a backlink index such as Ahrefs or Semrush, because finding a dead page is easy but seeing how many links point to it is not.

• 1. Your competitors’ dead pages. Every site that has been around for a few years has deleted or moved content without redirecting it. Start with a competitor backlink analysis: in a backlink tool, enter a competitor’s domain, open the report of their best pages by links, and filter for 404 pages. Sort by referring domains. You will often find old pages that still carry links from dozens of sites, and any topic close to your own is a candidate.
• 2. Broken pages about a topic. Rather than limiting yourself to a handful of competitors, you can search the web for dead pages on a subject. Content research tools let you query a topic, filter for broken pages only, and set a minimum referring-domain threshold so you only see opportunities with real link equity behind them.
• 3. Broken outbound links on relevant sites. Many sites link out to pages that later break. A backlink tool’s broken links report shows the dead pages a given domain links to. Export those URLs and check which have the most referring domains pointing at them.
• 4. Resource pages. Curated lists of useful links rarely get updated, so they accumulate dead links, and the resources they point to tend to be well linked elsewhere. Find them with search operators such as keyword intitle:resources, then scan each page for broken links. A free checker extension highlights every broken link on a page in seconds. Resource pages are a deep enough vein to warrant their own approach, which we cover in getting onto resource pages.

Whichever method you use, the principle is the same: you are hunting for dead pages that other people are still linking to. For a wider menu of ways to earn links, see growing your backlinks.

How to qualify the opportunity before you build anything

This is the step most guides skip and most campaigns get wrong. People find a dead page, immediately build a replacement, and only then discover the links pointing at it were worthless. Qualify first. You are checking two things: whether the links are good, and why they exist.

• Check link quality. Pull the dead page’s live backlinks and group them by domain. Filter aggressively for the attributes that tend to track with quality: followed links, a sensible minimum domain rating, and referring sites that have real organic traffic rather than empty domains. It is normal for this to cut a list of 100 links down to 20 or 30 genuinely useful ones. If almost nothing survives the filter, the opportunity is not worth your time, however tempting the topic. Our guide to the marks of a strong link explains the signals worth filtering on, and if you are auditing at scale, checking your backlinks covers the wider process.
• Check link reasons. Read the context around the surviving links. You are looking to distinguish two types. General links recommend the resource as a whole with no stated reason, often with vague anchor text. Deep links recommend it for a specific point, and the surrounding text tells you exactly why. Deep links are gold, because they tell you what to put in your replacement so your pitch lands. Use the Wayback Machine to see what the dead page actually contained, and note the recurring reasons people linked to it. If most links cite original research or proprietary data you cannot easily reproduce, walk away. The anchor text people used is itself a clue to intent, which our natural anchor text unpacks in more detail.

Creating or matching the replacement resource

Once you know why a dead page earned its links, you can decide how to replace it. There are two routes, and the right one depends on what you already own.

• Match an existing page. If you already have a resource that serves the same purpose, you may need only light edits to make it a clean swap. This is the fastest path and usually the most cost-effective. The closer your page is to what the dead page offered, the easier the editor’s decision becomes.
• Recreate the resource. If nothing on your site fits, build something that fulfills the same job as the original. Use the Wayback Machine snapshot to understand the dead page’s structure and scope, then create a piece that covers the same ground. Do not copy the archived content; use it as a brief. Bake in the specific points your qualification work flagged as link reasons, so that when you pitch a deep linker the relevance is obvious.

For the general linkers who gave no clear reason, you cannot tailor to intent, so compete on overall quality instead. Make the replacement genuinely better than the original: simplify the explanation, add visuals or a template, and correct anything out of date. That gives you a credible answer to the unspoken question of why your page deserves the link. The output of this step is the kind of asset that earns links on its own merits, which is the definition of an organically earned links. If you would rather earn the link inside fresh content, our guest posts and the comparison of niche edits compared with guest posts cover the alternatives.

Writing the outreach email

Outreach is where campaigns are won or lost, and the bar is low because most outreach is poor. The Backlinko and Pitchbox study of 12 million outreach emails found that only 8.5 per cent receive any reply at all. The same study points to what moves that number: personalized subject lines lifted reply rates by 30.5 per cent, personalized email bodies by 32.7 per cent, and sending a single follow-up boosted replies by 65.8 per cent, with multiple messages roughly doubling responses.

Segmenting your prospects

The practical implication is to segment rather than blast. Group your prospects by link reason and write a short template for each segment, then personalize the opening line for the individual. Reference the broken link up front, name the page it sits on, and make clear you are pointing out a genuine problem. Then offer your replacement as a helpful suggestion, not a demand. Include the exact location of the broken link so they can verify it in seconds, and keep the whole thing short. A workable structure looks like this:

Hi [name], I was reading your piece on [topic] and noticed the link to [dead resource] no longer works; it returns a 404. If you are updating the page, [your resource] covers the same ground and might be a useful replacement. Either way, thought you would want to know about the dead link. Cheers, [name].

The right contact

Reaching the right person matters as much as the wording. The study found that emailing multiple relevant contacts lifted reply rates by 93 per cent, so on larger sites it is worth finding the editor or content manager who can actually change the page. Follow up once or twice in the same thread if you hear nothing after a few working days, and stop there. For the mechanics of finding contacts and running sequences at volume, see our reaching out to bloggers and the wider media outreach playbook.

How to scale it without becoming spam

Broken link building scales through systems, not shortcuts. The temptation is to widen the net and send identical emails to everyone, but that is precisely what drives reply rates toward zero and risks your domain being marked as spam. The better way to scale is to make each stage repeatable while keeping the human judgment that makes it work.

A simple pipeline

Build a simple pipeline. Maintain a spreadsheet with the dead URL, the linking page, the contact, the link reason, your chosen replacement, and the outreach status. Run prospecting in batches by topic so that one replacement page can service many opportunities at once, which is the single biggest efficiency gain available. The economics reward this: the combined effect of multiple contacts and a follow-up sequence raised reply rates by 160 per cent in the Backlinko data, so a structured sequence to the right people beats a larger volume of one-off emails.

Outreach and SEO tools

Outreach tools and the link building features inside the major SEO suites can track who has opened, replied, or linked, which removes the manual overhead of chasing. What they cannot do is qualify opportunities or judge relevance for you, so keep those decisions in human hands. Scaling responsibly means doing more of the qualified work, not lowering the bar on what counts as qualified. When you report on it, tie activity to outcomes using the framework in our link building metrics.

Realistic expectations and where it fits

It is worth being honest about yields, because inflated expectations are the main reason teams abandon this tactic. Conversion rates are modest. If you qualify well and personalize your outreach, a healthy campaign might earn links from a low double-digit percentage of the prospects you contact, and many will be lower. The maths only works at a reasonable volume of qualified opportunities, which is why prospecting and qualification deserve more of your time than the email itself.

Broken link building also has natural limits. Not every niche has enough dead pages with quality links to sustain a continuous campaign, and the best opportunities get picked over by other SEOs. Treat it as one reliable channel among several rather than a standalone strategy. It pairs naturally with winning back links, since both involve recovering or inheriting links tied to specific URLs, and it complements content-led and digital PR approaches, as well as paid editorial placements, that generate links at greater scale. For a current view of what is working across the discipline, our link building statistics puts these numbers in context. Used this way, with realistic targets and disciplined qualification, broken link building earns its keep.