PDF.js vs Webpack

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

Top sites by authority

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

United States 16,571

298,515

India 10,607

154,177

Germany 7,093

132,021

United Kingdom 7,075

123,342

France 6,519

109,944

Brazil 6,144

99,932

Canada 5,755

96,644

Netherlands 4,631

78,103

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 PDF.js sites · All Webpack sites