MainAd vs Microsoft Advertising

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

Top sites by authority

MainAd · 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

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

United States 275

179,390

Italy 211

106,385

Germany 236

100,083

United Kingdom 297

87,382

France 235

73,584

Netherlands 205

63,866

India 184

59,833

Canada 166

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 MainAd sites · All Microsoft Advertising sites