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 69,673

4,350

United Kingdom 36,190

2,499

Canada 35,821

2,715

India 28,780

1,736

Germany 27,542

2,605

France 24,581

2,742

Spain 23,313

2,613

Australia 24,114

1,406

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 Smart Ad Server sites