core-js vs Twitter typeahead.js

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

Top sites by authority

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

United States 1,479,835

8,819

India 495,926

5,363

United Kingdom 457,421

4,733

Germany 439,161

7,501

Brazil 420,075

3,403

France 369,824

4,069

Canada 341,001

3,811

Italy 336,371

3,933

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 core-js sites · All Twitter typeahead.js sites