Bootstrap vs Flutter

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

Top sites by authority

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

United States 783,149

1,622

India 375,468

1,695

Germany 285,193

1,003

United Kingdom 258,945

828

Brazil 247,896

1,085

France 233,698

743

Italy 215,264

637

Canada 174,973

635

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 Flutter sites