Cloudflare Browser Insights vs Vercel Speed Insights

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

Top sites by authority

Cloudflare Browser Insights · Vercel Speed 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

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

United States 382,567

7,818

India 200,487

4,966

Brazil 176,969

2,559

Indonesia 173,937

1,891

United Kingdom 152,644

3,120

Canada 115,246

2,645

Germany 112,728

2,572

France 111,509

2,508

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, Jun 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 Vercel Speed Insights sites