Backlink Checker
See total backlinks, referring domains, and spam score for any domain - powered by live SEO data.
Backlink Checker is free - sign up to run it.
This tool uses live SEO data, so we ask for an email - that's it. Every account gets 1 free run of every advanced tool, every month. No card, no spam, no upsells.
Backlinks are still one of the strongest ranking signals. This free checker pulls live data from DataForSEO's backlink index and returns total backlinks, unique referring domains, broken/dofollow ratio, and a spam score for any domain. Useful for sizing up competitors or auditing your own profile.
Frequently asked questions
Where does the data come from?
DataForSEO's live backlinks index, which crawls the open web continuously. Comparable in size to Ahrefs and Majestic.
What's a good spam score?
Under 30% is generally healthy. 30-50% deserves investigation. Over 50% suggests a toxic profile that may need disavowing.
How is this different from paid tools?
Same data source many paid tools use, but limited to top-line metrics. For full backlink lists, anchor analysis, and historical tracking, paid tools are still ahead.
Long-form guides on the strategy behind the tool.
What is a Backlink? (And How to Get Them in 2026)
Backlinks explained - what they are, why they matter, what makes a good one, and how to build them.
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Read guide →What is SEO? A Founder's Definition (2026)
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