Astra vs Twenty Fifteen

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

Top sites by authority

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

United States 61,862

1,392

India 47,125

752

Spain 22,977

356

France 19,758

591

Brazil 19,843

424

Germany 19,508

675

United Kingdom 18,404

705

Indonesia 17,425

386

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 Astra sites · All Twenty Fifteen sites