Google Publisher Tag vs Smart Ad Server

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

Top sites by authority

Google Publisher Tag · Smart Ad Server · 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 · Smart Ad Server · share of sites in each country using one or the other

United States 77,333

5,017

Canada 41,155

3,149

United Kingdom 40,696

2,802

India 32,440

2,004

Germany 31,191

2,907

France 29,042

3,240

Spain 26,508

2,967

Australia 27,204

1,659

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 Smart Ad Server sites