Closure Library vs jQuery Migrate

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

Top sites by authority

Closure Library · jQuery Migrate · 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

Closure Library · jQuery Migrate · share of sites in each country using one or the other

United States 7,960

873,360

Germany 2,407

320,699

India 5,352

307,283

Japan 3,337

283,792

United Kingdom 2,866

271,907

Italy 2,378

269,098

France 2,590

267,883

Brazil 3,394

256,253

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 Closure Library sites · All jQuery Migrate sites