Amazon S3 vs cdnjs

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

Top sites by authority

Amazon S3 · cdnjs · 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

Amazon S3 · cdnjs · share of sites in each country using one or the other

United States 168,964

368,014

India 66,987

210,834

United Kingdom 62,516

137,098

Japan 29,882

160,828

Brazil 57,793

112,896

Canada 49,825

97,673

France 36,411

104,936

Germany 40,736

91,482

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 Amazon S3 sites · All cdnjs sites