Description
Observe browser message flows without breaking them. MCT neatly groups and colors logs in DevTools for:
- window.postMessage and window "message" events
- MessageChannel creation and MessagePort postMessage/incoming messages
- BroadcastChannel postMessage/incoming messages
- Worker/SharedWorker postMessage/incoming messages
- ServiceWorker postMessage/incoming messages
---
https://vreality64.github.io/message-channel-tracker/
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 | 2.3.2 |
| Updated | Sep 24, 2025 |
| Size | 23.98KiB |
| First Seen | Mar 22, 2026 |
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