Backlink Link Checker Guide

A backlink link checker pulls up every inbound link pointing at a page or domain, then flags the ones that are broken, lost, or low quality. This guide explains honestly what these checkers do, which free ones are genuinely worth using, and, most importantly, exactly how to fix each problem a scan surfaces.

What a backlink link checker does

A backlink link checker queries an index of the web and returns the pages that link to a target URL or domain. For each link it typically reports the linking page, the anchor text, whether the link is followed or nofollowed, and an authority estimate for the linking domain. Better tools also flag whether the link is live, lost, or newly found, and whether it points to a page that now returns an error.

The value is not the list itself, it is the diagnosis. A good scan tells you which links to protect, which to reclaim, and which to safely ignore. If you want the strategy behind the tool, our pillar on how to search back links covers the full workflow.

The best free backlink checkers to use

You have two dependable free starting points, and they complement each other:

• Google Search Console (your own site): a free Google service whose Links report shows which websites link to you, your most linked pages, and your top anchor text. Because the data comes from Google's own index, it is the most trustworthy source for a site you own.
• Ahrefs free Backlink Checker (any site): enter any domain and it returns the number of referring domains, the number of backlinks, a Domain Rating, and the top backlinks. It runs on a large independent crawler, so it works for competitors too.

Other reputable free checks include Bing Webmaster Tools for a second engine's link data, and the free tiers of Semrush and Moz. For a wider look at what a general link report contains, see our backlinks checker guide.

How to read a backlink checker report

A scan can look intimidating. Focus on these fields in order:

1. Referring domains: the count of unique linking sites. This matters more than total backlinks, since many links from one site count as a single source.
2. Link status: live, lost, or broken. Lost and broken links are where quick wins hide.
3. Target URL: the page on your site the link points to. If that URL now 404s, the link's value is leaking away.
4. Anchor text: the clickable words. A natural mix of brand, bare URL, and descriptive anchors is healthy; wall-to-wall exact-match keywords look manipulative.
5. Followed vs nofollow: followed links pass the most value, but a realistic profile includes both.
6. Domain authority estimate: a vendor score, useful for prioritizing, though Google does not use these third-party numbers.

To understand the authority column more deeply, read our domain authority checker guide.

Fix 1: reclaim lost and broken backlinks

The highest-value fix is recovering links you already earned. When a checker marks a link "broken," it usually means the target page on your site returns a 404. As MDN explains, a 404 means "the server cannot find the requested resource," commonly because a page was moved or deleted without a redirect.

Work through broken targets like this:

1. Note every linking page that points to a dead URL on your site.
2. If the content still exists at a new address, add a 301 redirect from the old URL to the new one so the link keeps passing value.
3. If the page is gone for good but valuable links point to it, consider recreating equivalent content at that URL.
4. For links marked "lost" because the other site changed, a polite outreach email often restores them.

Because broken targets are really a 404 problem, our broken link checker guide pairs well with this step.

Fix 2: clean up risky anchor text and patterns

If your scan shows a heavy concentration of exact-match commercial anchors, that is a risk signal. You cannot edit other people's links directly, but you can rebalance the profile:

• Earn new links with natural, branded, and descriptive anchors to dilute over-optimized ones.
• For anchors you control, such as guest posts or partner sites, ask for a more natural phrasing.
• Diversify the pages that receive links so no single URL looks artificially boosted.

Fix 3: decide what to ignore (and what to disavow)

Most low-quality links a checker finds need no action at all. Google has said repeatedly that its systems already discount spammy links, and that the disavow tool is unnecessary for most sites. Uploading a careless disavow file can even remove links that were helping you.

Reserve disavow for two narrow cases: you have received a manual action for unnatural links, or you are the target of a clear, large-scale spam attack. Outside those, ignore the noise and spend your energy earning good links instead.

Turn a scan into an ongoing routine

A one-time scan is a snapshot; the value compounds when you make it a habit:

• Monthly: check Search Console for new and lost links and fix any broken targets.
• Quarterly: run a competitor scan to find link opportunities you are missing.
• Ongoing: keep publishing content worth citing, which remains the most reliable way to earn links.

If you are weighing a paid tool for deeper monitoring, our review of the Ahrefs Backlink Checker compares its free and paid features against real alternatives.

Frequently asked questions

Is there a free backlink link checker?

Yes. Google Search Console shows the links to your own site for free, and the Ahrefs free Backlink Checker returns top backlinks, referring domain counts, and an authority score for any domain. Bing Webmaster Tools and the free tiers of Semrush and Moz offer additional free checks.

Does 404Pulse have its own backlink checker?

No. 404Pulse does not sell a proprietary backlink tool and does not show simulated scans. Our role is to explain how real, free checkers work and how to fix the issues they report, so you can act with confidence using tools you already trust.

What does a broken backlink mean and how do I fix it?

A broken backlink points to a page on your site that now returns a 404 error, usually because the page was moved or deleted without a redirect. Fix it by adding a 301 redirect from the old URL to the closest relevant live page, or by restoring the content at that address.

Should I disavow the low-quality links a checker finds?

Usually no. Google says most sites never need the disavow tool because its systems already ignore spammy links. Reserve disavow for a manual action for unnatural links or a clear negative-SEO attack, since a careless disavow can remove links that were helping you.

Which matters more, referring domains or total backlinks?

Referring domains is the better metric. Many links from a single website still count as one voting source, so a profile with links from many separate, relevant domains is stronger than one with a larger raw backlink count from few sites.