How Broken Links Hurt Your SEO (and How to Find Them)

Broken links are one of those website problems that accumulate quietly. A vendor you linked to shuts down. A resource you referenced moved without a redirect. A typo in an href that nobody caught. Over time, your site ends up with a scattered set of 404s that cost you in ways that aren't immediately obvious.

Why Search Engines Care About Broken Links

Search engines use links to discover and rank content. When Googlebot follows a link on your page and gets a 404, a few things happen:

• Crawl budget is wasted — Googlebot spent time following a dead link instead of indexing your actual content
• Link equity is lost — if you link out to a dead page, any PageRank that link might have carried goes nowhere
• Page quality signals drop — sites with many broken links are associated with neglect and low editorial standards, which factors into quality signals

None of this is an instant penalty. But as broken links accumulate, the aggregate effect on your site's authority and crawlability compounds.

The User Experience Problem

Beyond SEO, broken links directly hurt the people visiting your site. Someone reading a blog post, clicking a cited source, and hitting a 404 doesn't just lose trust in that link — they lose trust in you.

Broken links on navigation, CTAs, or internal pages are worse. A broken link in your pricing page or checkout flow is a conversion killer.

Where Broken Links Come From

External links are the most common source. You link to a third-party article or tool, and that URL changes or disappears. You have no control over this — the only defense is ongoing monitoring.

Internal links break when you restructure your site, rename slugs, delete pages, or migrate from one CMS to another without setting up redirects. These are preventable but easy to miss in a large site migration.

Assets — images, PDFs, scripts — return 404s when files are deleted from hosting or moved between storage locations.

How to Find Broken Links

Manual check: Not practical beyond a handful of pages.

Browser extensions: Tools like Check My Links (Chrome) let you scan a single page at a time. Useful for spot checks, not for monitoring.

Crawl tools: Screaming Frog, Ahrefs Site Audit, and similar tools can crawl your entire site and report 404s. Great for a point-in-time audit, but you have to remember to run them.

Daily monitoring: Page Canary checks the internal links on your key pages every day and re-checks broken ones in a real browser before flagging them. You get alerted when a link that used to work breaks, before it hurts your rankings or your users.

Fixing Broken Links

For external links that have moved: find the new URL and update your link. If the resource no longer exists, either link to an alternative or remove the link entirely.

For internal broken links: set up a 301 redirect from the old URL to the new one. This preserves any link equity and gives existing bookmarks and backlinks a working destination.

For broken images or assets: re-upload or update the source path. Check that your CDN or asset storage isn't serving 404s from the production URL.

Prevention

The easiest way to prevent broken links from accumulating is to check for them automatically. Running a manual audit once a quarter leaves a 90-day window where your site could have broken links pointing to 404s.

Start a free scan to find broken links on your site right now, or set up daily monitoring to catch new ones automatically.