Marker vs Sentry

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

Top sites by authority

Marker · Sentry · 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

Marker · Sentry · share of sites in each country using one or the other

United States 1,819

316,827

United Kingdom 672

94,693

India 536

77,149

Canada 638

74,305

Brazil 190

72,498

Germany 386

69,458

France 324

66,242

Japan 145

51,207

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, Sep 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 Marker sites · All Sentry sites