core-js vs Hammer.js

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

Top sites by authority

core-js · Hammer.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

core-js · Hammer.js · share of sites in each country using one or the other

United States 1,320,418

77,444

India 439,882

27,154

Germany 391,462

42,225

United Kingdom 404,005

29,613

Brazil 411,231

19,596

France 311,727

26,503

Canada 298,167

20,583

Italy 291,018

21,170

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 core-js sites · All Hammer.js sites