Astra vs Twenty Twenty-One

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

Top sites by authority

Astra · Twenty Twenty-One · 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

Astra · Twenty Twenty-One · share of sites in each country using one or the other

United States 54,700

4,232

India 40,848

2,951

Spain 19,785

952

Brazil 17,822

1,751

Germany 17,658

1,493

France 16,604

1,095

United Kingdom 16,239

1,427

Indonesia 14,649

907

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 Astra sites · All Twenty Twenty-One sites