How strong is a website?

How It Works

Common Crawl, a non-profit, crawls billions of pages every month and publishes which domains link to which. Searvia ranks every domain in that graph by how close it is to the rest of the web (harmonic centrality) and turns the rank into a 0–100 score on a log scale: the top sites get close to 100, a typical small business site 15–35.

Referring domains are the different domains that link to the site in the same crawls. Common Crawl is a sample of the web, so the counts are lower than in tools with their own crawler, but they are consistent for comparing sites with each other.

Last updated Oct 25. The index is refreshed when Common Crawl publishes a new graph, about every three months.