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Analytics

Websites Using Google Tag Manager

Google Tag Manager (GTM) is a tag-management container that lets marketers deploy analytics, ads and other scripts without editing code. It is one of the most common tags on the web.

7,473,183 sites detected across 129,313,463 indexed domains refreshed monthly · August 2026

The source-code fingerprint

googletagmanager.com/gtm.js Search all 7,473,183 results →

The container loader is fetched from googletagmanager.com/gtm.js?id=GTM-XXXX, so googletagmanager.com/gtm.js is present whenever a GTM container is installed.

Likely false positives: GTM is a container, not the end tool, a match means a container exists, not which tags fire inside it.

Example websites using Google Tag Manager

These domains all contain the googletagmanager.com/gtm.js fingerprint in their homepage source right now. A match is a verified substring of the live page, so confidence is high, the false positives noted above are the main caveat.

Showing 30 of 7,473,183 matching sites. Open the full ranked list, inspect the matched source, and export the domain list →

Related technologies

Google Analytics 4Google AdsFacebook PixelHotjar

How this works

SearchWebCode indexes the raw HTML, CSS and JavaScript source of public web pages. To find sites using Google Tag Manager we match the literal fingerprint googletagmanager.com/gtm.js, the code Google Tag Manager ships, against that index, then verify each match against the raw source. Counts reflect the current index (129,313,463 domains, refreshed monthly, last built August 2026) and grow as we scale toward the whole web. Run the search yourself to see every match, view the full page source for any result, filter by TLD or regex, and export the domain list.

Comparing adoption across tools? The Web Technology Adoption Report ranks the most common tags in the index side by side.