Base UI vs Bootstrap

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

Top sites by authority

Base UI · Bootstrap · 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

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

United States 1,157

886,770

India 823

429,293

Germany 562

322,762

United Kingdom 595

295,976

France 502

279,130

Brazil 461

273,285

Italy 389

251,088

Spain 438

202,979

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 Base UI sites · All Bootstrap sites