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 43,847

7,482

Germany 37,735

8,571

France 37,286

7,579

United States 21,228

19,616

Italy 31,506

6,706

United Kingdom 17,874

10,689

Netherlands 15,416

7,349

Canada 9,090

9,812

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 Complianz sites · All Google Optimize sites