SEO Library Fundamentals 1 min read

PageRank

In short

PageRank is Google's original algorithm, created by Larry Page and Sergey Brin, that measures a page's importance based on the quantity and quality of links pointing to it. A modern version is still one of many ranking signals.

On this page

The original idea#

PageRank imagined a “random surfer” clicking links forever. Pages where the surfer is more likely to end up are more important. A link from an important page passes more value than a link from an unimportant one, and that value is shared among all the links on the page.

PageRank today#

  • Google confirmed it still uses PageRank internally, in an evolved form, as one of hundreds of signals.
  • The public “Toolbar PageRank” score (0–10) was retired in 2016 — any tool showing a “PR” score today is estimating.
  • Third-party metrics such as Domain Authority and Domain Rating try to approximate link-based authority.

What it means for you#

  • Earn editorial links from relevant, respected pages.
  • Use internal links to flow value from strong pages to important ones.
  • Avoid wasting value through redirect chains and broken links.
  • Remember relevance and content quality matter more than raw link counts.

Related: link equity, backlinks.

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