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 46,026

8,439

Germany 41,520

10,140

France 41,901

9,450

United States 21,357

22,776

Italy 33,445

7,701

United Kingdom 19,610

12,439

Netherlands 17,013

8,660

Canada 10,120

11,536

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 Complianz sites · All Google Optimize sites