Free SEO Tool
Free Website Authority Checker
Enter any domain to get a real 0-100 authority score, based on open backlink data, no signup, no card.
Open backlink dataInstant100% free
Enter a domain to check
We'll look up its authority score from open backlink data in real time.
WHAT WE MEASURE
A real score, built on open backlink data
We don't claim to reproduce Ahrefs' or Moz's proprietary metrics. This score comes from Open PageRank, an independently published, transparent alternative.
Referring Domains
How many unique domains link back to the site, weighted by their own authority, not just raw count.
Open PageRank Score
An open, published algorithm modeled on the original PageRank concept, run against real web-crawl backlink data.
Global Rank
Where the domain sits relative to every other domain OpenPageRank has scored, from the most-linked-to sites down.