webtracking.org · free tool

GTM Container Explorer

Paste an exported Google Tag Manager container JSON (Admin → Export Container) and browse every tag, trigger, and variable in one place — then get an instant audit for paused tags, Custom HTML, missing consent settings, and dead config. Parsing a container you exported is legitimate; the browser already loads its gtm.js on every page.

100% client-side — your container JSON is parsed in this browser and never uploaded · works offline

In GTM: Admin → Export Container → pick a version → download the JSON, then paste its contents below. A raw published gtm.js is minified JavaScript and is out of scope — this reads the clean exported JSON.

Privacy note. The JSON stays in this tab — there is no server, no upload, and no analytics. Still, a container export can contain API secrets or internal URLs inside tag parameters; treat the file as sensitive and only paste containers you are authorised to inspect.

See what those tags actually send

This explorer reads your container's configuration. To watch the tags fire in the wild — every request, pixel, and third party a live page loads — run it through Tag Reaper.

Audit a live site → Tag governance standard

Your container JSON never leaves this browser; no account, no server. Related: Tag Governance · all free tools