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 1,348,640

4,600

United Kingdom 403,486

1,723

Germany 403,347

1,183

India 400,388

2,128

France 317,870

1,184

Canada 289,821

1,799

Brazil 290,538

1,010

Italy 219,709

960

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 HSTS sites · All PerimeterX sites