HTTP/2 vs HTTP/3

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

Top sites by authority

HTTP/2 · HTTP/3 · 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

HTTP/2 · HTTP/3 · share of sites in each country using one or the other

United States 174

1,137,483

India 400

533,896

Brazil 273

409,200

United Kingdom 98

387,999

Indonesia 50

291,484

Germany 595

286,932

Italy 58

284,574

Canada 62

281,458

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 HTTP/2 sites · All HTTP/3 sites