Vitals vs Zipify OCU

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

Top sites by authority

Vitals · Zipify OCU · 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

Vitals · Zipify OCU · share of sites in each country using one or the other

United States 3,310

311

United Kingdom 1,382

111

India 1,273

67

Canada 993

114

Germany 992

70

Australia 956

88

France 905

61

Italy 674

46

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 Vitals sites · All Zipify OCU sites