Sgtm Previewez

Enable real-time debugging for GTM Server-Side by automatically injecting the necessary X-Gtm-Server-Preview header into all outgoing requests matching your configured domain pattern. Works directly with Google's Tag Manager API using your browser authentication.

When you click "Generate & Activate", the extension:
- Verifies your Google account permissions and access to your GTM account
- Requests a preview token through GTM's official APIs
- Stores the token locally in your browser
- Injects it into matching requests

Essential Requirements:
- You must be logged into Chrome with the same Google account that has access to the GTM containers you want to debug
- Required permissions to the GTM account/container
- Cookies and site data must be enabled

Key Features:
🔧 Advanced Request Interception
- Works with XMLHttpRequest, fetch API
- Custom domain patterns
- Middleware mode support

📡 sendBeacon Support
- Script injection for beacon
- Real-time monitoring
- Full payload inspection

🎯 Flexible Payload Injection
- 3 injection modes
- Custom variable naming
- Dynamic path configuration