postMessage debugger

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ibnkhbkkelpcgofjlfnlanbigclpldad

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Description from extension meta

This extension prints messages sent with postMessage to the console

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Description from store

This chrome extension prints messages sent with postMessage to the console for debugging.

Latest reviews

Валентин Ткачев 2023-11-12: Thank you, very convenient for development process.
Валентин Ткачев 2023-11-12: Thank you, very convenient for development process.
E. Donker 2023-01-30: This extension is great! Use it a lot.
E. Donker 2023-01-30: This extension is great! Use it a lot.
Matt P 2023-01-20: I was pleasantly surprised that this reports messages sent to iframes as well as messages received by the top frame as well. As others said, if you don't see anything in the devtools console, you probably need to pull out the sidebar to look at the verbose/debug log level. A good example case is the youtube embed API (you can find examples on codepen). It would be very helpful if this logged a bit more information about each MessageEvent rather than just the data...like the origin, source, ports and lastEventId. Currently it seems to log the window title, but perhaps the window url or origin would be more useful.
Matt P 2023-01-20: I was pleasantly surprised that this reports messages sent to iframes as well as messages received by the top frame as well. As others said, if you don't see anything in the devtools console, you probably need to pull out the sidebar to look at the verbose/debug log level. A good example case is the youtube embed API (you can find examples on codepen). It would be very helpful if this logged a bit more information about each MessageEvent rather than just the data...like the origin, source, ports and lastEventId. Currently it seems to log the window title, but perhaps the window url or origin would be more useful.
Elías Daniel Araya Díaz 2022-12-26: This is not working at all 👎
Elías Daniel Araya Díaz 2022-12-26: This is not working at all 👎
Edouard Lopez 2021-06-30: Work as expected and log event, but I wasn't able to toggle off the logging other than disabling the whole extension.
John Horner 2021-04-20: Very useful extension, but the thing about selecting 'verbose' in the Console's 'levels' box ought to be more prominent! It should be in the description of the Extension: "This extension prints messages sent with postMessage to the console (turn on Verbose levels to see them)"
John Horner 2021-04-20: Very useful extension, but the thing about selecting 'verbose' in the Console's 'levels' box ought to be more prominent! It should be in the description of the Extension: "This extension prints messages sent with postMessage to the console (turn on Verbose levels to see them)"
Danilo Hoss 2020-10-08: very helpfull :)
Danilo Hoss 2020-10-08: very helpfull :)
Alberto Blacutt 2020-08-17: Nice tool... works great
Alberto Blacutt 2020-08-17: Nice tool... works great
Oliver Jones 2020-01-08: This works nicely and does what I need. Others have mentioned setting "Verbose" in "Default Levels". It's also helpful to choose the appropriate context from the pulldown (just to the left of the eyeball) in the top bar of console.log Suggestions for improvement, if you have time: 1) log the postMessage events from / to all contexts, not just the chosen one. 2) use some sort of log level that doesn't require messing with Default Levels, if possible. These things would make it easier for me to ask my customers to use it to troubleshoot message posting between iframes (mine) and parents (theirs). Again, thanks for this extension. It's really useful.
Oliver Jones 2020-01-08: This works nicely and does what I need. Others have mentioned setting "Verbose" in "Default Levels". It's also helpful to choose the appropriate context from the pulldown (just to the left of the eyeball) in the top bar of console.log Suggestions for improvement, if you have time: 1) log the postMessage events from / to all contexts, not just the chosen one. 2) use some sort of log level that doesn't require messing with Default Levels, if possible. These things would make it easier for me to ask my customers to use it to troubleshoot message posting between iframes (mine) and parents (theirs). Again, thanks for this extension. It's really useful.
Pike96 2019-10-18: Convenient tool! I was about to write one, it saves my time. For guys not seeing the log, Check 'Verbose' in Console tab's top bar 'Default levels'
Pike96 2019-10-18: Convenient tool! I was about to write one, it saves my time. For guys not seeing the log, Check 'Verbose' in Console tab's top bar 'Default levels'
Eric Eldard 2019-08-22: Works as advertised (logs to debug, so make sure to set console log level to Verbose). Inspected the source code on 8/22/19 and as of now it's not doing anything malicious (no file downloading, no posting your data, no analytics tracking). Thanks for a very helpful tool!
Eric Eldard 2019-08-22: Works as advertised (logs to debug, so make sure to set console log level to Verbose). Inspected the source code on 8/22/19 and as of now it's not doing anything malicious (no file downloading, no posting your data, no analytics tracking). Thanks for a very helpful tool!

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