33Across vs Microsoft Advertising

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

Top sites by authority

33Across · Microsoft Advertising · 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

33Across · Microsoft Advertising · share of sites in each country using one or the other

United States 14,035

179,390

Italy 5,379

106,385

Germany 6,234

100,083

United Kingdom 7,346

87,382

France 5,721

73,584

Netherlands 4,780

63,866

India 6,407

59,833

Canada 7,374

57,630

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 33Across sites · All Microsoft Advertising sites