Back In Stock vs Vitals

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

Top sites by authority

Back In Stock · 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

Back In Stock · Vitals · share of sites in each country using one or the other

United States 1,474

3,566

United Kingdom 829

1,463

India 684

1,304

Canada 749

1,060

Australia 597

984

France 588

979

Germany 560

990

Indonesia 1,317

172

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 Back In Stock sites · All Vitals sites