Google Ads Conversion Tracking vs Site Kit

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

Top sites by authority

Google Ads Conversion Tracking · 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

Google Ads Conversion Tracking · Site Kit · share of sites in each country using one or the other

United States 30,750

215,676

India 15,493

110,602

Japan 30,376

82,773

Brazil 15,814

80,295

United Kingdom 13,602

72,179

France 10,168

74,632

Spain 9,016

67,753

Italy 8,693

63,679

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 Google Ads Conversion Tracking sites · All Site Kit sites