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 23,700

436,711

India 9,406

243,576

Brazil 8,307

230,631

Germany 7,802

191,904

Japan 6,143

181,403

United Kingdom 9,959

161,912

France 7,528

156,599

Italy 6,050

140,074

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 Polyfill sites · All Swiper sites