Day.js vs jQuery UI

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

Top sites by authority

Day.js · jQuery UI · 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

Day.js · jQuery UI · share of sites in each country using one or the other

United States 14,792

571,404

India 5,710

248,863

Germany 4,547

241,117

France 3,955

214,196

Brazil 3,856

201,788

United Kingdom 4,861

200,445

Italy 3,096

201,839

Spain 2,948

191,362

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 Day.js sites · All jQuery UI sites