Cloudflare Browser Insights vs VWO

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

Top sites by authority

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

United States 358,777

17,274

India 188,732

8,269

Brazil 165,894

4,964

Indonesia 159,635

3,679

United Kingdom 141,129

8,797

Canada 104,823

7,739

Germany 103,081

6,216

France 97,614

5,428

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 VWO sites