Broken link building is an SEO technique where you find dead links (404 errors) on other people’s websites and convince webmasters to replace them with a link to your content. The result is a valuable backlink earned without spam, in a mutually beneficial way. In this guide, you’ll find the complete step-by-step process: how to find broken links on competitor sites, which tools to use from Ahrefs to free alternatives, and ready-made outreach email templates that actually get replies.
In short
- Broken link building involves finding dead links (404 errors) and convincing webmasters to replace them with a link to your content.
- Personalized broken link outreach achieves a 15-25% response rate, while generic outreach barely reaches 1-3%.
- The whole process has 5 steps: find dead links, assess value, prepare content, find a contact, and send the email.
- Earning one backlink this way takes an average of 3-5 hours of work spread out over time.
- Ahrefs is a premium paid tool priced from $29 to $449 per month, with no trial period.
- Ahrefs quality filters (dofollow, page DR 5+, traffic above 20) narrowed 100 links down to 29 opportunities.
- Send a follow-up after 3-4 business days, and no more than 1-2 times, to avoid building a spammer reputation.
What is broken link building and how does it work
Broken link building is a white-hat SEO technique that involves finding dead links (404 errors) on other websites and convincing webmasters to replace them with a link to your content. The mechanism is simple. You find a broken link, create or point to a valuable replacement, and then pitch it to the site owner.
Why does it work? The webmaster gets a fixed link, and you gain a valuable backlink. It’s an exchange of value, not spam.
What is a dead link (404 error)
A link is dead when it leads to a page returning a 404 Not Found error: this means the target resource has been removed, moved, or never existed. A 404 status code is the standard HTTP server response telling the browser that the requested page is unavailable.
It’s worth distinguishing between two types. A broken link can be internal or external. In the context of link building, we’re mainly interested in external links, meaning those pointing from someone else’s domain to a resource that no longer exists online.
Why it’s also called Dead Link Building
The name Dead Link Building is a synonym for the same method. The term highlights that the starting point is a “dead” link leading nowhere. The technique has gained popularity as a scalable alternative to classic guest posting, because it’s built on real value: you help fix a broken page while earning a link for yourself. The more dead links you find in your niche, the greater your potential for gaining backlinks.
Why broken link building is an effective white-hat technique
Broken link building works because it’s grounded in real value. Instead of asking for a link “for nothing,” you fix a specific 404 error on the webmaster’s site by pointing them to a better replacement. This approach falls fully within the bounds of white-hat SEO and doesn’t break any Google guidelines.
A win-win for the webmaster and for you
Picture the situation. A webmaster has a dead link on their site that’s ruining the reader experience. You send a polite message: “Hey, this link is broken, and I’ve got a great replacement for you.” They get a cleaner page, and you get a valuable backlink. That’s why personalized broken link outreach achieves a 15-25% response rate, while raw cold emailing stalls at 5-8%.
Is link building legal and does it still work
Yes. Link building is entirely legal and compliant with Google Search Essentials guidelines. Google treats valuable backlinks like “votes of trust”: the more high-quality links you have, the more authoritative your site becomes.
In 2026, link building still has a strong influence on rankings. What matters, though, is the quality and context of referring domains, not the sheer number. Notably, broken link building is the 5th most commonly used link building tactic according to Aira’s report, based on a survey of over 250 specialists. That’s proof the technique has real, industry-wide application.
Broken link building step by step: the complete process
The entire broken link building process comes down to five logical steps: find competitors’ dead links, assess the page and link value, prepare replacement content, find the webmaster’s contact, and send the outreach. Semrush describes a 5-step process, while Ahrefs simplifies it to 4 steps by merging verification with opportunity assessment. Before you start, prepare a backlink analysis tool, access to the Wayback Machine, and a spreadsheet to track outreach.
The broken link building process in 5 steps
Step 1: Find dead links on competitor sites
Export a competitor’s link profile and filter it for 404 errors. You’re looking for pages that once attracted backlinks but no longer exist today. That’s your goldmine of opportunities.
Step 2: Assess the page and link value
Not every dead link is worth pursuing. Apply four quality filters: dofollow link, excluding subdomains, page DR of 5 or higher, and domain traffic above 20. In Ahrefs’ example, these filters narrowed down 100 links to just 29 valuable opportunities. For higher quality, target domains with DR above 50 and skip pages abandoned for years.
Source: Ahrefs – opportunity filtering example
Step 3: Prepare alternative content
This is where your edge comes from. Check the removed content in the Wayback Machine and create a better version: simplify it, add visuals, and update the data. Don’t copy it 1:1. The webmaster needs to see that you’re offering a real improvement, not just a plain substitute.
Step 4: Find the webmaster’s contact
Identify the decision-maker. This could be the article’s author, an editor, or the site administrator. The more accurate the contact, the higher your chances of getting a reply.
Step 5: Send and monitor the outreach
Send a personalized email and track the results. The realistic cold outreach success rate is 5-8%, which translates to 5-8 backlinks for every 100 emails sent. That’s why it pays to scale your efforts: in a niche market, around 10 referring domains may be enough, but competitive industries need 30-40. Consistent monitoring and follow-up is what sets effective off-page SEO apart from a one-off campaign.
How to find broken links on competitor sites
You’ll find competitors’ dead links in two sources. The first is the competitor’s link profile in Ahrefs, where reports show pages returning 404 errors. The second is industry resource pages, which you scan using Google operators or a browser extension. Both approaches complement each other and are worth combining.
Analyzing competitors’ link profiles
Paste the competitor’s domain into Ahrefs Site Explorer. Open the Best by links report, then set the 404 not found filter and sort the results by number of referring domains (RD) in descending order. This is how you surface the most valuable dead pages: in the Content Marketing Institute example, there were as many as 134 dead pages, some of which had gathered over 50 referring domains.
Want to find broken links going out from a given site? Use the Broken Links report in Site Explorer. For robbierichards.com, it showed 32 dead target pages. Those are ready-made targets for outreach.
The resource page method
Resource pages are a goldmine of opportunities. The more external links they contain, the more often one of them dies. A page with 187 links is roughly 38 times more likely to have a broken link than a page with just five links.
Search for them using Google operators:
"keyword" inurl:resources"keyword" intitle:links"keyword" intitle:resources inurl:links.htmlintitle:resources inurl:resources
After opening a resource list, scan the links with a 404-detecting extension. Every dead link is a potential opportunity for a swap. Pass the addresses you’ve gathered this way on for further value assessment, as covered in Section 3.
Broken link building tools: Ahrefs and free alternatives
A good tool speeds up every stage of the process, from link scanning to prospecting. The choice depends on your budget and the scale of your efforts. Below you’ll find both premium solutions and proven free alternatives.
Ahrefs as a premium tool
Ahrefs is the most powerful paid tool for broken link building. It lets you analyze competitors’ link profiles and search for dead pages across your entire niche. The 2026 pricing looks like this: Starter $29/mo, Lite $129/mo, Standard $249/mo, Advanced $449/mo, and Enterprise with custom pricing. Paying annually gets you a discount of around 16-20%, but note: Ahrefs doesn’t offer a free trial.
Source: Ahrefs Pricing 2026
The most valuable feature is Content Explorer, which searches for broken pages on a given topic, not just from a single competitor. Just apply the “In title” filter, the broken pages option, and a minimum of 20 referring domains: a sample query returned 188 broken pages about content marketing.
Free and cheap alternatives
You don’t have to pay to get started. Ahrefs Broken Link Checker is a free tool that scans any site in seconds and detects both internal and external dead links, with no sign-up or download required.
A few more options worth trying:
- Check My Links: a Chrome extension that automatically highlights every 404 error while you browse a page.
- W3C Link Checker and Dead Link Checker: scan a site and report broken links.
- SE Ranking Broken Backlink Checker: a list of dead links along with page metrics.
- Wayback Machine: a preview of removed content, so you can recreate a replacement.
Free tools are enough to get started, but at a larger scale, Ahrefs genuinely saves time.
How to write an outreach email that gets a reply
An effective outreach email is short, personalized, and leads with value. Start by pointing out the specific dead link you found on the webmaster’s site, and only then suggest your own material as a replacement. This simple reversal of order makes a huge difference: personalized emails generate up to 142% higher reply rates than generic ones, even though only 5% of senders personalize every message.
Email structure and a ready-made template
Write to a specific person, an editor or webmaster, never a generic address like hello@. The numbers speak for themselves. Personalized broken-link outreach achieves a 15-25% response rate, while generic outreach barely reaches 1-3%.
A ready-made template has five elements:
- A personalized greeting using their name.
- Pointing out the broken link (give the exact page URL).
- Explaining why your content makes a good replacement.
- A hyperlink to the new content.
- A short, polite closing.
The structure of an effective outreach email
A key detail: instead of asking “would you link to me?”, offer a closely related replacement right away. This approach can increase the conversion rate of outreach by 2-5x.
Building a relationship with the webmaster and following up
Sent an email and got silence? That’s normal. Send a follow-up after 3-4 business days in the same thread, ideally on a Tuesday or Thursday morning. Keep it moderate: 1-2 follow-ups are recommended, no more, since repeated emails build a spammer reputation.
Ahrefs also suggests segmenting prospects into deep linkers and general linkers, with a separate template for each group. This makes your message sound natural, and gives the relationship with the webmaster a chance to outlast a single link.
How long broken link building takes and how to automate it
Earning one backlink this way takes an average of 3-5 hours of work spread out over time. That’s the total time spent finding the dead link, assessing the page’s value, preparing content, and doing outreach. Links earned this way are often on solid domains with a DR of 40-60.
A realistic campaign timeline
Doing it manually is time-consuming. It’s the main barrier to entry that practitioners complain about on industry forums. Prospecting eats up the first few hours. Then comes creating the replacement content and a series of follow-ups, which stretches the campaign out over several weeks. Conversion tends to be low: shotgun outreach is a numbers game, where only a small fraction of recipients respond, and your domain risks getting blocked.
What’s worth automating and what isn’t
Automate prospecting, not full personalization. Sniper outreach, meaning a dozen or so personalized emails a day, converts far better than mass sending. Let the tools handle the rest. Semrush’s Link Building Tool, once a campaign is set up and your inbox is connected, auto-updates email status: sent, delivered, read, replied, backlink earned, and it also monitors link activity. Dedicated platforms like JustReachOut combine both stages at once: finding broken links in a niche and reaching out to site owners. Whatever builds the relationship, don’t hand that off to a machine.
Sources
- semrush.com/blog/broken-link-building – Semrush – Broken Link Building
- gmass.co/blog/broken-link-outreach-template – GMass – Broken Link Outreach Template
- ahrefs.com/seo/glossary/broken-link – Ahrefs – Broken Link (glossary)
- developers.google.com/search/docs/essentials – Google Search Essentials – official guidelines
- ahrefs.com/blog/broken-link-building – Ahrefs – broken link building tactics
- backlinko.com/hub/seo/broken-link-building – Backlinko – creating replacement content and quality KPIs
- lagrowthmachine.com/broken-link-building-guide – La Growth Machine – cold outreach success rate
- ahrefs.com/blog/ahrefs-pricing – Ahrefs – 2026 pricing
- ahrefs.com/broken-link-checker – Ahrefs Broken Link Checker – free tool
- autobound.ai/blog/cold-email-guide-2026 – Autobound – cold email guide 2026
- reddit.com/r/SEO/comments/hg7dvc/anyone_had_experience_in_broken_link_building – Reddit r/SEO – practitioners’ experience with broken link building
- justreachout.io/tools/broken-link-building-tool – JustReachOut – broken link building tool
