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 1,295,217

7,570

India 433,567

4,732

Brazil 406,300

3,055

United Kingdom 402,603

4,158

Germany 384,505

6,548

France 315,055

3,351

Italy 302,259

3,540

Canada 295,823

3,300

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, Sep 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