Kirki Customizer Framework vs RankMath SEO

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

Top sites by authority

Kirki Customizer Framework · RankMath SEO · 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

Kirki Customizer Framework · RankMath SEO · share of sites in each country using one or the other

United States 73

112,652

India 46

69,474

Germany 30

49,126

United Kingdom 24

38,904

Spain 35

36,292

France 31

34,405

Brazil 23

33,148

Italy 46

31,059

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 Kirki Customizer Framework sites · All RankMath SEO sites