Is Google Tag Manager blocked by ad blockers?

Q: Is Google Tag Manager blocked by ad blockers?

There isn't enough measured data yet to publish a Google Tag Manager block rate.

Not enough data yet. Measurement for Google Tag Manager is just getting started.

Google Tag Manager loads your other tags. When GTM itself is blocked, every tag it manages goes dark at once.

Block rate trend

Daily Google Tag Manager block rate measured over the last 90 days.

Not enough history yet to chart a trend.

How to reduce this

Official fix

Run server-side GTM on a custom first-party domain. Use an opaque subdomain (not gtm.* or sgtm.*) — 2026 filter lists now target those tokens by name.

Official Google Tag Manager docs → blockrate's own first-party reporter already forwards events from your domain.

Embed this badge

Drop the live Google Tag Manager block rate into a README or status page:

app.tsx

1 [![Google Tag Manager block rate](https://blockrate.app/block-rate/gtm/badge.svg)](https://blockrate.app/block-rate/gtm)

Measured directly across engaged visitors by blockrate, the open-source per-provider block-rate library. No cookies, no consent banner, no personal data. See detection run in your own browser.