Astra vs ExtendThemes Calliope

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

Top sites by authority

Astra · ExtendThemes Calliope · 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 · ExtendThemes Calliope · share of sites in each country using one or the other

United States 61,862

6

India 47,125

4

Spain 22,977

1

Brazil 19,843

7

France 19,758

2

Germany 19,508

6

United Kingdom 18,404

3

Indonesia 17,425

6

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 ExtendThemes Calliope sites