Booster Page Speed Optimizer vs Carro

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

Top sites by authority

Booster Page Speed Optimizer · Carro · 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

Booster Page Speed Optimizer · Carro · share of sites in each country using one or the other

United States 2,475

175

India 1,230

53

United Kingdom 1,012

72

Canada 750

70

Germany 736

43

Australia 631

47

France 628

35

Italy 606

25

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 Booster Page Speed Optimizer sites · All Carro sites