Adform vs AppNexus

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

Top sites by authority

Adform · AppNexus · 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

Adform · AppNexus · share of sites in each country using one or the other

United States 4,068

63,153

United Kingdom 2,752

28,394

Canada 1,647

28,277

Germany 3,358

20,086

India 1,781

21,189

France 2,624

20,122

Spain 3,315

17,003

Australia 1,195

18,205

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 Adform sites · All AppNexus sites