Day.js vs jQuery

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

Top sites by authority

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

United States 14,792

1,602,536

Japan 9,068

694,689

Germany 4,547

657,374

India 5,710

637,845

United Kingdom 4,861

540,397

France 3,955

506,084

Italy 3,096

464,759

Brazil 3,856

453,310

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 sites