Spider SEO Auditor

Backlink checker

Backlink checker

Spider's backlink checker shows how many sites link to a domain, how strong it is, which links were won and lost each month, the anchor texts other sites use, and which linking sites look risky. Its link gap finds sites that link to your competitors but not to you, the most realistic places to earn your next links.

  • Domain authority, backlinks and referring domains.
  • New and lost links per month for the last year.
  • The most used anchor texts.
  • Linking sites with a high spam score.
  • Every backlink: the linking page, the page it links to, the anchor and whether it is followed.

It is the list of sites that link to a competitor and not to you. A site that already links to a similar business is far more likely to link to you than a random site, so this is the best starting list for outreach. See how to earn backlinks.

No. Spider shows the data and the opportunities. Buying links breaks Google's spam policies and can get a site penalised.

Where does the data come from?

From a web-scale backlink index, pay as you go. Each lookup is saved, so showing it again costs nothing.

Try Spider on your site

Start with a free check of any page, then create a free account to use every feature in full.