AppNexus vs Sizmek

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

Top sites by authority

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

United States 53,163

3,431

United Kingdom 24,886

1,039

Canada 24,461

1,031

India 18,232

1,028

Germany 17,552

814

France 16,584

748

Australia 15,760

900

Spain 15,151

788

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, Sep 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 Sizmek sites