Choices vs core-js

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

Top sites by authority

Choices · core-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

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

United States 17,079

1,479,835

India 7,978

495,926

United Kingdom 7,019

457,421

Germany 6,784

439,161

Brazil 12,670

420,075

France 5,863

369,824

Canada 5,567

341,001

Italy 5,080

336,371

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 Choices sites · All core-js sites