PDF.js vs PWA

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

Top sites by authority

PDF.js · PWA · 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

PDF.js · PWA · share of sites in each country using one or the other

United States 15,476

357,909

Germany 6,438

186,412

Brazil 5,953

178,007

India 9,983

172,788

United Kingdom 6,236

151,800

France 5,600

131,196

Italy 4,442

105,713

Canada 5,195

103,719

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 PDF.js sites · All PWA sites