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 585,514

23,700

India 254,733

9,406

Germany 246,243

7,802

France 210,785

7,528

Brazil 208,190

8,307

United Kingdom 201,723

9,959

Italy 195,443

6,050

Spain 180,678

6,155

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 jQuery UI sites · All Polyfill sites