Postmessageobserver
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Overview
Chrome PostMessage Observer provides a convenient side panel to view postMessages for the current page. This extension offers a user-friendly UI that simplifies the debugging and observation of message flows between iframes and the top window. Easily intercept and analyze postMessage messages, view their payload, source, and target details, and efficiently troubleshoot communication issues within web applications.
Contributions are welcome to the GitHub project, which can be found here: https://github.com/yishiashia/chrome-postmessage-observer
Tags
Privacy Practices
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Not being sold to third parties, outside of the approved use cases
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Not being used or transferred for purposes that are unrelated to the item's core functionality
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Not being used or transferred to determine creditworthiness or for lending purposes
🔐 Security Analysis
This extension hasn't been security-scanned yet.
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Created from revision 3cde211b0c on 10/20/2025.