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Description
A Chrome extension for debugging and monitoring Matomo Tag Manager (MTM) events, triggers, and tags in real-time.
## What is it for? - General Information
The MTM Event Monitor helps you debug and analyze your Matomo Tag Manager implementation by providing real-time insights into event firing, trigger conditions, and tag execution.
### In short
The "MTM Event Monitor" provides a comprehensive debugging interface for Matomo Tag Manager implementations. It shows you exactly which events are fired, which triggers are activated, and which tags are executed - all with precise timing information and detailed analysis.
### Something more detailed
Debugging Matomo Tag Manager can often be challenging and time-consuming, especially when trying to understand why certain triggers don't fire or tags aren't executed as expected.
This browser extension solves these problems by providing real-time monitoring of all MTM activities directly in your browser. It captures `_mtm.push()` calls, analyzes trigger conditions, tracks tag execution, and provides detailed variable information - all without requiring any changes to your MTM setup.
The extension integrates with MTM's native debugging capabilities and uses MTM's built-in methods to provide accurate, up-to-date information about your tag management implementation. Whether you're setting up new triggers, debugging existing tags, or optimizing your MTM configuration, this tool provides the insights you need.
### Key benefits
- **Real-time monitoring**: See events as they happen with precise timestamps
- **Trigger analysis**: Understand exactly why triggers fire or don't fire
- **Tag tracking**: Monitor which tags are executed and when
- **Variable inspection**: View current values of all MTM variables
- **Console integration**: Structured logging for detailed debugging
- **No setup required**: Works with any existing MTM implementation
Reviews
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Permissions (3)
Permissions
activeTabℹ Can access the current tab when you click the extension scriptingℹ Can inject scripts into web pages storageℹ Can store data locally in your browser
Details
| Version | 1.4.1 |
| Updated | Jul 7, 2025 |
| Size | 1.1MiB |
| First Seen | Mar 21, 2026 |
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