Quick Answer

Broken link building is a strategy where you find dead links (404 errors) on other websites, create or identify replacement content on your site, and ask the site owner to swap the broken link for yours. It works because you are solving a problem for the webmaster while earning a backlink. Average success rate is 5-10% per outreach email.

Why Broken Link Building Works

Every website accumulates broken links over time. Pages get deleted, domains expire, URLs change. A study found that 66.5% of links to websites within the last 9 years are now dead (Ahrefs, 2024). That is an enormous number of broken links waiting to be replaced.

Broken link building is one of the few link building strategies where you offer genuine value with zero downside for the recipient. You are not asking for a favor. You are alerting them to a problem (dead link hurting their user experience) and providing a solution (your relevant content as a replacement). This is why it consistently converts at 5-10%, higher than most cold outreach methods (Ahrefs, 2024).

Finding Broken Links

There are three reliable methods to discover broken link opportunities:

Method 1: Check Resource Pages

Resource pages are curated lists of links on a specific topic. They are ideal targets because they contain many outbound links, and the site owner has already demonstrated willingness to link to external content.

Search Google for: "your niche" + "resources" or "your niche" + "useful links"
Use the Check My Links Chrome extension to instantly highlight broken links on any page
Or use Ahrefs Site Explorer to find outgoing broken links from any domain

Method 2: Find Dead Competitors

When a competitor goes out of business or takes down their site, all their backlinks become broken. Use Ahrefs to find domains in your niche that are no longer active but still have backlinks pointing to them. These are goldmine opportunities because:

The linking sites have already shown they value content on your topic
There is no competing content at the dead URL anymore
You can create a superior replacement and capture all those links

Method 3: Monitor Broken Pages on Target Sites

Pick 20-50 high-authority sites in your niche. Use Ahrefs Broken Links report or Screaming Frog to scan for broken outbound links. Sites with 100+ pages often have dozens of broken links. The average website has 5-10% broken outbound links (Semrush, 2024).

Quick Answer

The key to broken link building success is offering a replacement that is equal to or better than the dead page. Use the Wayback Machine to see what the original page contained, then create content that covers the same topic more thoroughly. A relevant, high-quality replacement converts at 3-5 times the rate of a generic suggestion.

Tools for Finding Broken Links

These tools make broken link discovery efficient:

Ahrefs Broken Links report: Enter any domain and see all broken outbound links, sorted by the number of referring domains the dead page had. Best for finding high-value dead pages. Ahrefs crawls over 8 billion pages daily (Ahrefs, 2025).
Screaming Frog SEO Spider: Crawl any site and filter for outbound 404 errors. Free for up to 500 URLs per crawl. Best for comprehensive site-level audits.
Check My Links (Chrome extension): One-click broken link check for any page you are viewing. Highlights broken links in red. Best for quick manual checks on resource pages.
Wayback Machine (web.archive.org): See what a dead page used to contain. Essential for understanding what the original link was referencing so you can create a proper replacement.

The Outreach Email for Broken Links

Broken link outreach emails convert at higher rates than other types because you are leading with value. Here is the structure:

Mention their specific page (not just the site). Show you visited it.
Point out the broken link.Be specific: "The link to [anchor text] under your Resources section returns a 404 error."
Suggest your replacement. Briefly describe how your content covers the same topic. Include the URL.
Keep it short. Under 100 words. No long introductions, no flattery. Webmasters receive hundreds of emails. Respect their time.

Studies show that broken link emails with a specific page reference and a direct replacement link get 40% higher response rates than vague notifications (Pitchbox, 2024).

Success Rates and Expectations

Set realistic expectations for your broken link building campaign:

Email response rate: 10-15% (higher than standard outreach because you offer clear value)
Link placement rate: 5-10% of emails sent result in a link (Ahrefs, 2024)
Time investment: Finding and qualifying 50 broken link opportunities takes 4-8 hours
Best results from: Resource pages, educational sites (.edu), and government sites (.gov)

Educational institutions have the highest broken link rates and the highest response rates. A study of 10,000 .edu sites found that 18% of their outbound links were broken, and outreach to .edu webmasters converted at 12% (Moz, 2024).

Scaling the Strategy

Once you have the process down, here is how to scale:

Build a library of content that can serve as replacement for common dead pages in your niche
Set up weekly Ahrefs alerts for new broken links on your top 50 target sites
Batch your outreach: find 20-30 opportunities, send all emails in one session
Track everything in a spreadsheet: target URL, broken link, replacement URL, email sent date, response

Key Takeaways

66.5% of links from the last 9 years are now dead, creating massive broken link building opportunity (Ahrefs, 2024).
Three discovery methods: check resource pages, find dead competitors, monitor target sites for broken outbound links.
Use the Wayback Machine to understand what the original dead page contained before creating your replacement.
Broken link outreach converts at 5-10% because you lead with genuine value (fixing their site).
.edu sites have 18% broken outbound links and 12% outreach conversion rates (Moz, 2024).
Scale by building a replacement content library and setting up automated broken link alerts.

Broken Link Building

What you will learn