CallTrackingMetrics vs Site Kit

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

Top sites by authority

CallTrackingMetrics · Site Kit · 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

CallTrackingMetrics · Site Kit · share of sites in each country using one or the other

United States 9,526

191,744

India 738

94,995

Japan 59

73,790

Brazil 148

71,181

United Kingdom 916

64,452

France 99

63,629

Spain 107

63,132

Italy 81

58,351

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, Sep 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 CallTrackingMetrics sites · All Site Kit sites