SEO Guide

How to Find Broken Links Before They Cost You Traffic and Trust

By ToolFlic Expert Team Updated 9 October 2026 995 words

Broken links cost you in three places at once: visitors hit a dead end and leave, crawlers waste limited crawl budget on pages that return nothing, and outbound links that used to pass credibility now point at a 404. The good news is that finding them on any given page is fast and free - you fetch the page, request every link it contains, and read the HTTP status of each one.

This guide explains what a broken link actually is at the protocol level, why it hurts, how to check a page with our broken link checker, and how to fix each failure. A note on scope up front: our tool scans one page at a time - enter a URL and it fetches that page plus the links on it, then lists every failure with its status code. It is a per-page audit tool, not a whole-site spider.

What a "broken link" means at the protocol level

A link is broken when requesting its target does not return a healthy page. That is usually a 404 Not Found, but there are other failures: a 410 Gone (deliberately removed), a 500 server error, a 403 Forbidden, an endless redirect loop, or a link to a domain that no longer resolves at all (DNS failure) or times out. Search engines treat these differently - a 410 drops a URL faster than a 404 - so knowing which code you have guides the fix.

Distinguish internal broken links (pointing to your own pages that moved or were deleted) from external ones (pointing to other sites that changed). Internal ones you can fix outright; external ones you update, remove, or accept as reference decay.

Why they cost you

For users, a dead link on a page that was supposed to help is a broken promise, and enough of them erode trust and increase bounce. For crawlers, links are how discovery works: every hop that returns an error is wasted crawl budget, and on large sites with a limited crawl allowance that means real pages get crawled less often.

Outbound broken links quietly drain credibility too - a citation that now 404s passes less contextual trust than a live one. And if a page is linked internally through a URL that 404s, you can leak the ranking signal you were trying to route to it. None of this is dramatic per link; multiplied across a neglected site, it is a slow leak.

Checking a page step by step

Open the broken link checker and paste the full URL of a page you care about, then run the check. The server fetches that page, requests each link it finds, and returns a table where every failure is listed with its HTTP status - so you see not just that a link is dead but why.

Because it works one page at a time, an honest workflow is to check your highest-value URLs first: the homepage, top landing pages, evergreen articles and money pages. A tool like this is not a full-site spider; for site-wide coverage you run it across your important pages (a list you can pull from your sitemap) or pair it with a dedicated crawler.

Reading the status codes and fixing each

The fix depends entirely on the code the checker reports:

Code	Meaning	Usual fix
404	Target not found	Repoint to the new URL, add a 301 redirect, or remove the link.
410	Permanently gone	Remove the link; no redirect target exists.
500	Server error on target	Often transient - recheck; if persistent, remove or replace.
403	Forbidden to the crawler	Verify it is not blocking legitimate access; adjust or remove.
Redirect loop	Circular 301/302 chain	Collapse to one final canonical URL.
DNS / timeout	Domain dead or unreachable	Replace the reference with a live source.

For internal links that moved, a 301 redirect from the old path to the new preserves the signal you were already routing. For external references that died, either find an equivalent live source or remove the citation - a dangling link is worse than none.

Making it a habit, not a rescue

Broken links accumulate from deleted pages, renamed slugs and other sites changing their URLs. The cheap defence is cadence: run the checker over a batch of key pages monthly, fix what appears, and let your sitemap drive which URLs to prioritise. If you allow AI or search crawlers, tidy internal links also help them reach the right pages, which connects directly to keeping your robots.txt and discovery signals honest.

Frequently Asked Questions

Does a few broken links hurt my SEO?

A handful will not tank a site. The cost is cumulative - wasted crawl budget, a worse user experience and leaking internal link equity. Fix the ones on high-value pages first and treat the rest as housekeeping.

Does this tool crawl my whole website?

No. It is a one-page scanner: you enter a URL, it checks that page and every link on it, and lists failures with their HTTP status. For whole-site coverage, run it across your important pages (pull the list from your sitemap) or use it alongside a crawler.

What is the difference between a 404 and a 410?

A 404 means not found and may be temporary; a 410 means permanently gone, so search engines drop it from the index faster. If a page is dead for good, returning a 410 (and removing the link) is cleaner than an ambiguous 404.

Should I redirect every broken internal link?

Redirect internal links that moved to a real replacement with a 301. Do not redirect a dead URL to an unrelated page just to avoid a 404 - that is a soft 404 and confuses both users and crawlers. If nothing equivalent exists, remove the link.

Do broken outbound links matter if the target is not my site?

Yes, though less directly. A citation that now 404s passes less trust and can look careless to readers. You cannot control other sites, but you can update the reference to a live source or remove it.

How often should I check for broken links?

Run a pass over key pages monthly, and after any migration, redesign or bulk content change - the events that create the most dead URLs at once. Regular checks turn link rot from a crisis into routine maintenance.