Check your GA4 and Google Tag Manager setup for the tracking errors that corrupt your reports. Run a free, scored audit and see your grade in two minutes.
Connect your GA4 property and GTM container and get a scored, A–F graded check across consent, data quality, governance and conversions. Your first check is free: see your grade and the issues found, then unlock the full report when you’re ready.
Confirms the GTM snippet is present and well-formed and that GA4 is receiving data. A missing snippet is the most common reason reports look empty or wrong.
Checks whether tags fire before consent (a GDPR problem) or run without an opt-out path (a US problem), and whether Consent Mode v2 signals are configured.
Looks at 30 days of live GA4 data for spam referrals, broken channel attribution, UTM misuse, and duplicate purchases that inflate revenue.
Cross-references GA4 key events against GTM tags to find gaps that corrupt your reporting and your ad bidding.
If you only need to know whether the tag is on the site and sending data, three free checks answer that in a few minutes.
View the page source and search for your GA4 Measurement ID (it starts with G-) or your Google Tag Manager container ID (GTM-). If GA4 is deployed through GTM, only the GTM ID appears in the source. The GA4 tag loads from inside the container, so not finding G- there is expected.
Open Reports, then Realtime, in GA4 and visit the site in another window. Your visit should appear within a minute or so. If nothing arrives, the tag isn't sending to this property.
Enter your URL at tagassistant.google.com. It opens the site in debug mode and lists every Google tag that loads and every event it sends, page by page.
None of these tell you whether the data is right: whether tags wait for consent, whether purchases are counted twice, whether each key event has a working tag behind it. That is what the scored check above is for.
Just need to see what’s inside a GTM container because you’ve lost access to the account? That’s a different job. The free GTM Inspector reads any container’s tags, triggers and variables straight from the live site, no login required.
Three quick checks: search the page source for your GA4 Measurement ID (it starts with G-) or your GTM container ID (GTM-), open GA4's Realtime report while you visit the site, and run the site through Google Tag Assistant to see each tag and event. Those confirm the tag loads and sends data. They don't show whether the data is right, which is what the scored check covers.
Yes. Tracking Auditor's free check connects to your GA4 property and GTM container read-only and grades the setup A–F across consent, data quality, governance and conversions. Your first check is free, no card required.
A proper Google Analytics checker verifies tracking is installed once and everywhere, tags respect consent, the data is free of spam and duplicates, and every conversion you rely on has a working tag behind it. It goes beyond checking whether the GA snippet is present.
Yes. The check covers GA4 and Google Tag Manager together. The audit runs across five scored dimensions (consent, GTM governance, GA4 event quality, cookies, conversion integrity). For the full methodology, see the complete Google Analytics audit guide. Read the full audit guide.