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Is your Consent Mode v2 actually working?

Google Consent Mode v2 became mandatory for EEA/UK sites in March 2024. Most implementations have silent gaps — missing default states, update triggers that never fire, or tags running before consent is granted. This checker finds them instantly.

Consent default stateConsent update triggerGoogle signal mappingPre-consent tag firingGTM container analysis
No sign-in requiredResults in under 30 secondsWorks with any CMPFree forever

What you'll get

Consent default detected
Consent update detected
Google signals mapped
Pre-consent tag risk
GTM container check
Overall consent score

You can also upload a GTM JSON export on the next screen for a deeper container check.

No sign-in required · Files never stored · Results in under 30 seconds

What is Consent Mode v2?

Required for all EEA and UK sites using Google Ads or GA4

Basic vs Advanced mode

Basic mode blocks all Google tags until consent. Advanced mode allows pings with consent signals so Google can model conversions from opted-out users — critical for ad campaign accuracy.

The 7 consent types

Consent Mode v2 adds two new required types: ad_user_data and ad_personalization. Missing these means your Google Ads remarketing and conversion modelling is non-compliant.

Why most implementations fail

The default state fires before the CMP loads, the update command fires on the wrong trigger, or GTM tags lack per-tag consent settings. Each gap leaks data or loses conversions.

CMP compatibility

OneTrust

Full GTM integration check

Cookiebot / Usercentrics

Script load order analysis

CookieYes

Consent signal timing check

Custom CMP

Manual dataLayer pattern detection

Go deeper

Want the full 20-check GA4 + GTM audit?

The full audit covers GTM container health, GA4 event quality, attribution, user tracking, and page coverage — plus your Consent Mode score.

Run the full audit free →