Google Publisher Tag vs Rubicon Project

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

Top sites by authority

Google Publisher Tag · Rubicon Project · 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 Publisher Tag · Rubicon Project · share of sites in each country using one or the other

United States 69,673

40,336

United Kingdom 36,190

21,806

Canada 35,821

22,134

India 28,780

14,870

Germany 27,542

14,552

Australia 24,114

14,932

France 24,581

12,787

Spain 23,313

11,532

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 Google Publisher Tag sites · All Rubicon Project sites