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 334

194,280

Italy 249

120,089

Germany 290

109,223

United Kingdom 360

96,386

France 289

85,328

Netherlands 250

71,387

India 226

66,986

Canada 210

64,841

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 MainAd sites · All Microsoft Advertising sites