postMessage-catcher icon

postMessage-catcher

by yangjin · Developer Tools
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

A Chrome extension that captures the content of postMessage.

Users
2,000
0 in 30 days
Rating
4.0 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#22K
#19K among extensions
Version
2.0.0
updated 30 Apr 2025

Users

monthly, 3 years
2001,1002,000Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 2,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
024Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 4 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About postMessage-catcher

An effective development tool to help you capture all messages posted and received on the current page. It aims to provide an easier debugging experience when you need to communicate with other iframes. Contributions are welcome to the Github project.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months+1,000+100.0%00.00
1 year+1,000+100.0%+2+1.00

Version history

4 versions recorded
2.0.030 Apr 2025
1.2.022 Aug 2021
1.1.08 Jun 2021
1.0.06 Jun 2021

Details

Category
Developer Tools
First seen
6 Jun 2021
Size
2.2 MB
Languages
en-US
Pricing
Free
Extension ID
henlmhlhpgnkeecjjcbhhcfmecohnilo

Permissions and risk

Minimal riskimpact 2, likelihood 0
Permissions
storage

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