Cloudflare Browser Insights vs Fathom

Head-to-head usage across the sites we track.

Top sites by authority

Cloudflare Browser Insights · Fathom · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

Cloudflare Browser Insights · Fathom · share of sites in each country using one or the other

United States 358,777

5,128

India 188,732

1,781

Brazil 165,894

948

Indonesia 159,635

828

United Kingdom 141,129

3,204

Canada 104,823

1,547

Germany 103,081

1,893

France 97,614

1,325

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Cloudflare Browser Insights sites · All Fathom sites