Bootstrap vs Headless UI

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

Top sites by authority

Bootstrap · Headless UI · 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

Bootstrap · Headless UI · share of sites in each country using one or the other

United States 783,149

10,432

India 375,468

6,038

Germany 285,193

4,896

United Kingdom 258,945

5,181

Brazil 247,896

3,592

France 233,698

4,122

Italy 215,264

3,177

Canada 174,973

4,263

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 Bootstrap sites · All Headless UI sites