How this tool works

You paste a list of domains and the tool returns each one's Harmonic Centrality and PageRank rank from Common Crawl's open web graph (118M domains), side by side, exportable as CSV.

Harmonic Centrality measures how central a domain is to the whole web (reachable through few link hops) and is Common Crawl's primary, spam-resistant metric; PageRank measures authority from the quantity and quality of incoming links. Free and open, no API key. Ranks are served instantly from a local copy of the latest release (top 12M domains).