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Power Platform Community / Forums / Power Apps / Embed Power App as IFR...
Power Apps
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Embed Power App as IFRAME: pass message from IFRAME to the web app

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Posted on by Community Power Pla... Microsoft Employee

Hello,

 

I'm embedding a power app into my web app and I can pass params via the URL query parameters.

Power app is some kind of a calculator and in the end I'd like to pass data back to my web app.

How can I do it?

 

I have options like passing a URL that will be triggered from the iframe upon completion, or trying to share the data source, but these sound like a lot of unnecessary complexity.

 

In a web app we can pass message from iframe to parent web app with `Window.postMessage`, can something like this be done in a powerapp?

Categories:
Building Power Apps
I have the same question (0)
  • kalluu91 Profile Picture
    kalluu91 39 on at
    Yes, in Power Apps, we can still use the `postMessage` API to send the data between pages.
    In Power Apps, you can develop a custom web resource (to display the calculation and to use the `postMessage` API to send the data back to your web app), then display this web resource in your web app.
     
    Check this article for sample on how to use `postMessage` API in Power Apps web resource: https://kalcancode.wordpress.com/2025/04/01/how-to-send-large-json-data-in-the-data-parameter-of-a-power-platform-html-web-resource/
     
    Cheers,
    Kim Anh

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