GSAP vs Zone.js

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

Top sites by authority

GSAP · 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

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

United States 336,193

160,558

India 120,243

33,347

United Kingdom 105,254

38,985

Germany 103,146

26,223

France 94,934

21,155

Italy 90,969

17,136

Canada 75,336

30,815

Brazil 81,278

19,795

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 GSAP sites · All Zone.js sites