Debug GTM Consent Mode v2 in real time.
Free, open-source Chrome extension for developers, analysts, and compliance teams who need to debug and validate Google Tag Manager Consent Mode implementations. Detect race conditions, missing defaults, GCS/GCD mismatches, and tag firing violations before they cost you data and compliance.
All processing runs entirely in your browser — no data ever leaves your machine.
Real-Time Consent Monitoring — Watch consent state changes as they happen. See analytics_storage, ad_storage, and all consent types update live.
Violation Detection — Automatically catch tags firing without proper consent, missing default commands, and race conditions before they become compliance issues.
GCS/GCD Signal Decoding — Decode Google Consent Signals from network requests. See exactly what consent data Google is receiving.
Consent Simulation — Test different consent scenarios without touching real cookies. See before/after tag behavior instantly.
18+ Validation Rules — Automated checks catch implementation issues with pass/fail/warn results and actionable recommendations.
Multi-Vendor Tag Impact — Analyze tag behavior across GA4, Google Ads, Meta, LinkedIn, TikTok, Hotjar, Clarity, and more.
- Download — Clone or download this repository.
- Load the extension — Open
chrome://extensions/, enable Developer Mode, click "Load unpacked", and select this directory. - Visit any page with GTM — ConsentFlow automatically detects the container.
- Debug — Click the extension icon to see consent state, tag violations, validation results, and GCS/GCD signals live.
Analytics Engineers — Validate that your GTM consent implementation is firing correctly and not leaking data before consent is granted.
Compliance & Legal Teams — Verify that your site respects user consent choices and meets GDPR/ePrivacy requirements at the tag level.
QA Teams — Catch consent-related bugs before they reach production. Simulate scenarios and validate tag behavior systematically.
Agency & Freelance Consultants — Audit client implementations quickly. Export findings and deliver actionable consent reports.
| Platform | Status |
|---|---|
| Google Tag Manager | Supported |
| Google Analytics 4 | Supported |
| Google Ads | Supported |
| Meta (Facebook) Pixel | Supported |
| LinkedIn Insight Tag | Supported |
| TikTok Pixel | Supported |
| Hotjar | Supported |
| Microsoft Clarity | Supported |
| Pinterest Tag | Supported |
| Snapchat Pixel | Supported |
| Cookiebot (CMP) | Supported |
- Chrome 88+
- Edge 88+
- Brave (Chromium-based)
- 100% client-side — No data collection, no external servers, no accounts.
- Encrypted storage — Sensitive debugging data encrypted using AES-256-GCM.
- Content Security Policy — Full CSP implementation with input validation.
- Rate limited — Protection against abuse and performance issues.
git clone https://github.com/ChristopherLandaverde/ConsentFlow-Debugger.git
cd ConsentFlow-Debugger
# Load in Chrome:
# 1. Open chrome://extensions/
# 2. Enable Developer Mode
# 3. Click "Load unpacked"
# 4. Select this directoryMIT — see LICENSE for details.
Built by Christopher Landaverde