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 7,941

849,474

Germany 2,360

314,354

India 5,225

299,510

Japan 3,359

282,542

Italy 2,538

282,524

France 2,650

271,447

United Kingdom 2,878

269,921

Spain 2,862

252,481

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 Closure Library sites · All jQuery Migrate sites