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 14,927

1,645,337

Japan 9,148

705,260

Germany 4,620

672,972

India 5,745

652,564

United Kingdom 4,842

543,018

France 3,976

501,574

Brazil 3,785

468,680

Italy 3,012

448,261

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 Day.js sites · All jQuery sites