Google Tag Manager

Analytics

Tag container that loads other scripts (GA4, Ads, pixels). Detecting GTM means every tag inside it is in scope.

How to block it until consent

GTM itself is a loader; what matters is which tags it fires pre-consent. Configure each tag to respect Consent Mode or block via a consent-aware trigger. Loading gtm.js alone does not set tracking cookies but tags it fires usually do.

Detection signals

Host domains

googletagmanager.com

Request patterns

/gtm.js
/gtag/js
/gtm/

Categorisation follows common EU/DPC guidance. Your specific deployment may change the category (e.g. Stripe on a checkout page vs. a marketing page).