Alexa Certified Site Metrics vs Cloudflare Browser Insights

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

Top sites by authority

Alexa Certified Site Metrics · Cloudflare Browser Insights · 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

Alexa Certified Site Metrics · Cloudflare Browser Insights · share of sites in each country using one or the other

United States 2,045

356,639

India 1,302

185,990

Brazil 641

167,096

Indonesia 958

162,375

United Kingdom 1,165

139,708

Germany 1,099

103,876

Canada 1,100

103,033

France 959

97,867

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, Aug 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 Alexa Certified Site Metrics sites · All Cloudflare Browser Insights sites