jQuery UI vs Polyfill

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

Top sites by authority

jQuery UI · Polyfill · 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

jQuery UI · Polyfill · share of sites in each country using one or the other

United States 571,404

23,184

India 248,863

9,206

Germany 241,117

7,634

France 214,196

7,536

United Kingdom 200,445

9,905

Brazil 201,788

8,172

Italy 201,839

6,125

Spain 191,362

6,398

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 jQuery UI sites · All Polyfill sites