Free SEO tool

Backlink checker

See how many sites link to a domain, how strong its link profile is, and which linking sites carry the most weight.

7 of 7 free runs left this week
No sign-up. Uses one of your free runs; the same input again does not.

What the backlink checker shows

Enter a domain. You get its live backlinks and referring domains (subdomains included), its domain rank from 0 to 1,000, the share of referring domains with at least one followed link, the spam score, broken backlinks, and where the links come from by top-level domain and link type.

The table lists the 10 strongest referring domains: the sites with the highest rank that link to the domain, with how many links each one gives and when we first saw them.

Referring domains matter more than backlinks

A thousand links from one site count for much less than ten links from ten different, relevant sites. Compare the number of referring domains with your competitors', and look at who links to them: those sites may link to you too.

In the app

Competitor research: the full version

Any domain's keywords, top pages and backlinks, plus a weekly watch on competitors' new pages.

Frequently asked questions

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Does a check count towards my free runs?

Yes, each domain counts as one of your 7 free runs this week. The same domain again within 24 hours does not count again.

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Where does the backlink data come from?

From DataForSEO's backlink index, one of the largest outside Google. No index sees every link, so the numbers are best used to compare domains.

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Can I see all backlinks?

In the app the backlink explorer shows the full link profile, new and lost links, anchors, link gaps with competitors and weekly alerts.

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