Google Tag Manager Checker: Find Broken GTM Triggers
Find broken triggers, duplicate tags, and unpublished changes hiding in your GTM container. Enter your site and scan the whole setup in seconds.
Free with a Brainito account. No credit card required.
Expose Broken Triggers
Find tags that never fire because their triggers quietly stopped matching your pages.
Catch Duplicate Tags
Spot tags firing twice and inflating your numbers before reports go out to your team.
Verify Container Health
Confirm your container loads on every page and see warning signs of stale or unpublished setups.
Frequently Asked Questions
What does the Google Tag Manager Checker detect?
It scans your site for the GTM container, verifies it loads on your pages, and flags common problems such as duplicate containers, tags that fire more than once, and signals that triggers are misconfigured or changes never went live.
Why are my GTM tags not firing?
Frequent causes include trigger conditions that no longer match your URLs, changes saved but never published, consent settings blocking tags, and container snippets missing from some templates. The checker helps you narrow down which one applies.
Is the Google Tag Manager Checker free?
Yes. It is free after creating a Brainito account. Scan your container after every publish, hand the findings to whoever manages your tags, and rescan to confirm the fixes landed in 2026.
Find what is silently broken inside your GTM container
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