Booster Page Speed Optimizer vs Smile App

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

Top sites by authority

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

United States 2,898

13,022

United Kingdom 1,178

4,121

Canada 849

3,860

India 1,454

2,789

Australia 753

2,726

France 771

2,056

Germany 869

1,706

Italy 702

986

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 Booster Page Speed Optimizer sites · All Smile App sites