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 328,404

55,973

India 118,978

28,921

United Kingdom 105,671

21,516

Germany 102,329

22,016

France 97,822

18,386

Italy 96,801

15,655

Brazil 79,378

18,357

Spain 76,953

16,468

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 GSAP sites · All Zone.js sites