Free backlink checker

List the domains that link to any website, best first, with each referring domain's authority score and the total number of referring domains.

Try . Free, no account needed.

Need this at scale?

The same lookup is one API call at 0.05 credits / domain (one credit is $0.0003 to $0.001 depending on volume), with failed requests free.

cURL

curl "https://api.gridlode.com/v1/domain/backlinks?domain=python.org" \
  -H "Authorization: Bearer $GRIDLODE_KEY"

Get 1,000 free credits Referring Domains (Backlinks) API docs

FAQ

Are these page-level backlinks?

No, they are referring domains: every site that links to the domain at least once in the Common Crawl web graph. That is the number most SEO work relies on.

How many can I see?

The free tool shows the top 25. The API returns up to 1,000 per call and pages through the rest at 0.05 credits per domain.

Why is a link I know about missing?

Common Crawl samples the web, and we skip links from very low-ranked sites. Strong links are almost always included.