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 1,263,779

73,602

India 417,895

25,596

United Kingdom 393,397

28,430

Germany 379,059

39,562

Brazil 395,615

18,515

France 302,681

25,055

Italy 291,847

20,531

Canada 287,813

19,928

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, Oct 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