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 16,676

1,868,996

Japan 10,562

820,202

Germany 5,110

760,440

India 6,370

750,494

United Kingdom 5,349

627,325

France 4,664

602,656

Italy 3,455

522,636

Brazil 4,087

518,250

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, Jun 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