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 374,319

180,126

India 135,440

37,179

United Kingdom 119,878

44,450

Germany 113,182

29,348

France 112,048

25,078

Italy 105,125

19,352

Canada 85,143

35,078

Brazil 87,855

21,657

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 GSAP sites · All Zone.js sites