HSTS vs PerimeterX

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

Top sites by authority

HSTS · PerimeterX · 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

HSTS · PerimeterX · share of sites in each country using one or the other

United States 1,467,206

4,891

United Kingdom 450,618

1,917

Germany 441,210

1,345

India 429,462

2,342

France 366,415

1,393

Canada 324,872

1,984

Brazil 303,175

1,103

Italy 243,977

1,093

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 HSTS sites · All PerimeterX sites