💍 One Extension to Rule Them All

Professional GA4 & GTM
Debugging Toolkit

Debug Google Analytics 4, Google Tag Manager, Enhanced Conversions, and Consent Mode V2 with the most powerful Chrome extension for digital marketers and developers.

Add to Chrome - Free ☕ Buy me a coffee

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150+

Technologies Detected

Consent Types Tracked

Real-time

Event Validation

Tag Master

Powerful Features for Digital Marketers

Everything you need to debug and audit your Google Marketing Stack

DataLayer Monitor

Real-time tracking of all dataLayer.push events with automatic GA4 schema validation and scoring.

✓ Live event capture
✓ Validation scores (0-100)
✓ Export as JSON/CSV

Network Inspector

Google-only request filtering with GA4 parameter decoding and Enhanced Conversions validation.

✓ Server-Side GA4 detection
✓ SHA-256 hash validation
✓ Consent Mode decoder

GTM Injector

Inject any GTM container into any website instantly with persistence across page reloads.

✓ Instant injection
✓ Preview mode support
✓ Container detection

Consent Mode V2

Deep dive into all 7 consent types with metadata and CSP compatibility checks.

✓ 3 data sources
✓ Wait-for-update detection
✓ CSP validator

Tech Detection

Automatically detect 150+ technologies including frameworks, CMS, analytics, and marketing pixels.

✓ React, Vue, Angular
✓ WordPress, Shopify
✓ Meta, TikTok pixels

Element Picker

Visual CSS selector generator with automatic GTM variable code and trigger suggestions.

✓ Click-to-select mode
✓ Auto GTM code gen
✓ Test in browser

How It Works

Get started in seconds

Install Extension

Add Tag Master to Chrome from the Web Store - completely free.

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Open Side Panel

Click the Tag Master icon and open the side panel on any website.

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Start Debugging

Monitor events, inspect network requests, and validate your tracking implementation.

Professional GA4 & GTM Debugging Toolkit