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 3,333

292

United Kingdom 1,391

112

India 1,306

65

Canada 987

111

Germany 970

63

Australia 946

85

France 922

58

Spain 683

47

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 Vitals sites · All Zipify OCU sites