AppNexus vs Simpli.fi

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

Top sites by authority

AppNexus · Simpli.fi · 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 · Simpli.fi · share of sites in each country using one or the other

United States 53,163

27,634

Canada 24,461

3,495

United Kingdom 24,886

1,513

India 18,232

2,390

Germany 17,552

573

France 16,584

561

Australia 15,760

1,109

Spain 15,151

547

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 Simpli.fi sites