LazySizes vs Swiper

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

Top sites by authority

LazySizes · 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

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

United States 257,174

436,711

India 75,535

243,576

Brazil 67,920

230,631

Germany 86,805

191,904

Japan 88,025

181,403

United Kingdom 86,179

161,912

France 65,045

156,599

Italy 60,550

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 LazySizes sites · All Swiper sites