AppNexus vs ID5

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

Top sites by authority

AppNexus · ID5 · 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

AppNexus · ID5 · share of sites in each country using one or the other

United States 63,153

55,502

Canada 28,277

28,716

United Kingdom 28,394

27,695

India 21,189

20,684

Germany 20,086

19,361

France 20,122

18,034

Australia 18,205

18,751

Spain 17,003

15,355

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 AppNexus sites · All ID5 sites