Every website has them. Hidden in old blog posts, buried in product pages, lurking inside navigation menus — broken links are one of the most common and most damaging SEO problems webmasters overlook.

A broken link is simply a hyperlink that no longer works. When a user or search engine crawler follows it, they get an error — usually a 404 (Not Found) or 500 (Server Error) response. The destination simply does not exist anymore.

Why Broken Links Hurt Your SEO

Search engines like Google use crawlers — automated bots — to discover and index your website's content. These crawlers follow every link on your site. When they hit a broken link, several bad things happen simultaneously.

First, crawl budget gets wasted. Google allocates a limited number of pages it will crawl on your site per visit. Every time a crawler follows a broken link, it wastes one of those precious crawl slots on a dead end. On large sites, this can mean important pages never get indexed at all.

Second, link equity leaks away. When another website links to you, they pass what SEOs call "link juice" — ranking power — to your page. If that link points to a URL that no longer exists, all that equity evaporates. You lose the ranking benefit entirely.

Third, user experience suffers. Visitors who click a broken link get an error page. Many will immediately leave your site. This increases your bounce rate and sends negative engagement signals to Google.

The Most Common Causes of Broken Links

Understanding where broken links come from helps you prevent them in the future. The most frequent culprits are:

  • URL changes without redirects — You redesign your site or change a URL structure but forget to set up 301 redirects from the old URLs to the new ones.
  • Deleted pages — A product is discontinued, a blog post is removed, or a landing page is taken down without redirecting the URL.
  • External links going dead — You link to another website and they later delete or move the page you linked to. You have no control over this, but you are responsible for fixing it.
  • Typos in URLs — Simple human error when entering a link manually. A missing letter or extra slash creates an instant 404.
  • Changed domain structure — Moving from HTTP to HTTPS, changing from www to non-www, or moving to a new domain without comprehensive redirects.

How to Find Every Broken Link on Your Site

The fastest way to find broken links is to use a dedicated crawler tool. Our free broken link checker scans your entire website automatically, following every link it finds and reporting back which ones return error codes. You get a full report showing the broken URL, the page it was found on, the anchor text used, and the HTTP status code.

For most websites, a full scan takes less than a minute. The results are exportable as a CSV file so you can share them with your team or track fixes over time.

How to Fix Broken Links

Once you have your broken link report, the fixes fall into three categories:

1. Update internal links — If a broken link points to a page on your own site that was moved or renamed, update the link to the new URL. This is the cleanest fix.

2. Set up 301 redirects — If the old URL is receiving traffic from external sources or has backlinks pointing to it, set up a permanent redirect from the old URL to the most relevant existing page. This preserves any link equity.

3. Remove or replace the link — If there is no suitable replacement for an external broken link, either remove it entirely or replace it with a link to a different relevant source.

Make Broken Link Checks a Monthly Habit

Broken links appear constantly — every time you update your site, delete content, or link to an external source that later changes. The most effective approach is to schedule a monthly audit rather than treating broken links as a one-time fix.

While you are auditing your links, it is also worth checking your page speed and overall technical health. Broken links rarely appear in isolation — sites that accumulate them often have other technical issues that compound the SEO damage.

Turning Broken Links Into an Opportunity

Here is something many webmasters miss: broken links on other people's websites are actually an SEO opportunity for you. This is called broken link building. You find sites in your niche with broken outbound links, create content that replaces the dead resource, and reach out to suggest your page as a replacement. It is one of the most effective white-hat link building tactics available.

The key to this strategy is finding broken links at scale — and that is exactly what a good crawler tool makes possible.

Summary

Broken links are not just a minor housekeeping issue. They waste crawl budget, leak link equity, damage user experience, and send negative signals to search engines. A monthly audit using a broken link checker takes minutes and can meaningfully protect and improve your rankings over time.

In the next article, we will look at internal linking strategy — how to structure the links within your own site to maximise the flow of authority to your most important pages.