Day.js vs jQuery Migrate

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

Top sites by authority

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

United States 16,676

988,550

Germany 5,110

361,975

India 6,370

354,719

Japan 10,562

329,383

France 4,664

322,388

Italy 3,455

315,256

United Kingdom 5,349

313,223

Brazil 4,087

282,509

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 Migrate sites