How It Works
We scan public code for GTM container IDs, GA4 measurement IDs, gtag usage, and dataLayer signals.
100% freeNo API keyPublic data onlyNo store login
Free Google Tag Manager Checker
Detect GTM, GA4, gtag, and dataLayer signals from public ecommerce storefront code.
Scan a public storefront URL
Get focused issues and recommendations
Run the full audit for store-wide priorities
This check is useful alone. It is stronger inside a full audit.
Combine this result with SEO, trust, speed, conversion, security, accessibility, and revenue-priority checks.
Run full ecommerce auditWhy It Matters
GTM and GA4 are the measurement backbone for ecommerce teams. Bad setup can make paid media, SEO, email, and CRO decisions much weaker.
What We Check
GTM IDs, GA4 IDs, Universal Analytics leftovers, gtag calls, and basic dataLayer presence in the initial storefront HTML.
Best Practice
Keep container strategy clean, document event names, test ecommerce events in DebugView, and avoid duplicate pageview or purchase tracking.
When ecommerce teams usually run this check
Merchants usually use Google Tag Manager Checker before a launch, redesign, SEO sprint, conversion optimization cycle, or competitor review. It is useful when you need a focused answer fast without running a full audit first.
This is also a good pre-check before sending more paid traffic to a page. If the result exposes weak fundamentals, it is often cheaper to fix them before spending harder on acquisition.
Common mistakes this tool can help surface
A lot of stores lose performance because teams check only the homepage, optimize the wrong template, or fix cosmetic issues before structural ones. Focus first on the pages that matter for discovery, trust, and conversion.
- Reviewing one URL and assuming the whole store behaves the same way
- Treating the score as the goal instead of using it to prioritize fixes
- Ignoring mobile, product-page, or legal-page context when it matters to buyers
Try more free tools
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Find Out What's Costing You Sales
A complete audit of your store's trust, SEO, speed, conversion, and security โ with prioritized fixes ranked by revenue impact.
Want a full breakdown of your store revenue leaks?
The tools above are just the start. Our full audit analyzes 8 dimensions, gives you a prioritized fix list with revenue estimates, and a certification badge.