Polyfill vs Swiper

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

Top sites by authority

Polyfill · Swiper · 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

Polyfill · Swiper · share of sites in each country using one or the other

United States 23,184

427,105

India 9,206

239,537

Brazil 8,172

225,038

Germany 7,634

188,085

Japan 6,044

180,131

United Kingdom 9,905

161,180

France 7,536

159,069

Italy 6,125

145,736

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 Polyfill sites · All Swiper sites