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 651,665

180,126

India 252,538

37,179

United Kingdom 210,954

44,450

Germany 176,161

29,348

Canada 164,079

35,078

Brazil 168,763

21,657

France 159,876

25,078

Australia 111,932

26,185

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 React sites · All Zone.js sites