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 2,475

11,797

United Kingdom 1,012

3,763

Canada 750

3,449

India 1,230

2,463

Australia 631

2,463

France 628

1,853

Germany 736

1,613

Spain 448

1,136

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 Smile App sites