React vs Zone.js

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

Top sites by authority

React · Zone.js · 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

React · Zone.js · share of sites in each country using one or the other

United States 596,374

160,558

India 237,671

33,347

United Kingdom 191,623

38,985

Germany 162,924

26,223

Brazil 161,653

19,795

Canada 147,238

30,815

France 140,452

21,155

Australia 101,917

23,078

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 React sites · All Zone.js sites