Complianz vs Google Optimize

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

Top sites by authority

Complianz · Google Optimize · 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

Complianz · Google Optimize · share of sites in each country using one or the other

Spain 40,362

7,217

Germany 38,227

8,787

France 36,059

7,673

United States 20,910

19,946

Italy 29,561

6,615

United Kingdom 17,694

10,716

Netherlands 15,238

7,412

Canada 8,983

9,934

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 Complianz sites · All Google Optimize sites