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 77,333

46,102

Canada 41,155

25,623

United Kingdom 40,696

24,657

India 32,440

17,153

Germany 31,191

16,282

Australia 27,204

16,969

France 29,042

15,110

Spain 26,508

13,126

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 Publisher Tag sites · All Rubicon Project sites