RequireJS vs Zone.js

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

Top sites by authority

RequireJS · 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

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

United States 132,201

160,558

United Kingdom 40,149

38,985

Germany 38,420

26,223

India 30,963

33,347

Canada 29,177

30,815

France 27,073

21,155

Brazil 26,685

19,795

Australia 19,263

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 RequireJS sites · All Zone.js sites