postMessageObserver

A Chrome extension that allows you to observe the flow of postMessage messages on the side panel.

Users937

Rating5.0

Reviews1

Manifest versionV3

7-day growth+8

7-day growth rate+0.86%

Preview

postMessageObserver Media preview

1 assets

Trend

30-day user trend

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User Growth Over Time

Rating trend

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30-day rating change

Start

5.00

Latest

5.00

30-day rating change

0.00

2026年5月29日2026年6月4日

Growth overview

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1-day growthGrowing

+8+0.86%

7-day growthGrowing

+8+0.86%

30-day growthGrowing

+12+1.3%

Technical snapshot

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Version1.0.0

ManifestV3

Size23.07KiB

Languages1English (United States)

Published--

Store updated--

Last crawled--

Overview

Product summary

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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

Reviews