Google Tag Manager vs Tealium

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

Top sites by authority

Google Tag Manager · Tealium · 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

Google Tag Manager · Tealium · share of sites in each country using one or the other

United States 996,792

20,380

India 377,281

3,203

Japan 366,742

1,784

United Kingdom 353,752

3,317

Brazil 339,437

1,767

Germany 301,078

2,678

France 285,422

2,616

Canada 273,223

3,883

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 Google Tag Manager sites · All Tealium sites