Bold Upsell vs Vitals

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

Top sites by authority

Bold Upsell · Vitals · 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

Bold Upsell · Vitals · share of sites in each country using one or the other

United States 1,187

3,566

United Kingdom 375

1,463

India 193

1,304

Canada 417

1,060

Australia 249

984

Germany 149

990

France 119

979

Spain 85

663

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 Bold Upsell sites · All Vitals sites