Facebook Pixel vs Fathom

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

Top sites by authority

Facebook Pixel · Fathom · 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

Facebook Pixel · Fathom · share of sites in each country using one or the other

United States 611,008

5,103

Brazil 214,285

955

India 210,862

1,853

United Kingdom 192,259

3,143

Canada 157,641

1,511

Germany 136,373

1,962

Australia 132,758

1,079

Italy 126,077

1,048

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 Facebook Pixel sites · All Fathom sites