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Convert Image to Base64 in Power Automate

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Posted on by jokanol1

I have a Power Automate action that requires an image in base64. Is there a way to convert a given image to base64 using Flow via an action or Expression builder?

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CFernandes 8,402 Most Valuable Professional on at

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Hey Mate @jokanol1

You can use the Expression - base64(<your file content>)

If you are getting content from a SharePoint the you direct convert it - using the formula -

outputs('Get_file_content_using_path')?['body']?['$content']

https://flow.microsoft.com/en-us/blog/use-expressions-in-actions/#:~:text=To%20use%20an%20expression%20in,See%20more%20on%20each%20category.

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jokanol1 22 on at

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It worked, thanks!

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CFernandes 8,402 Most Valuable Professional on at

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@jokanol1 I am glad that your problem is resolved.😊

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wael_khanji 151 on at

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Hi
there is any way to know the size image ??
I mean to avoid failed action if the size is more than 28Kb
there is any expression use it on condition if size more than 28 don't use it

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Nantoanina 11 on at

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Hello,

I have same issue but my image is from PowerApps
I try same function but i alwayse get data like below

If you have any idea how to get "contentBytes" ??

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jt_michels 2 on at

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I know this has been a while, but wanted to respond in case you needed it. The contentBytes is indeed the base64 for your image. i.e. to view it you could enter it as a data URI for an image as data URI with the format data:[contentType]/[format];base64,{contentBytes} so for your png image:

"data&colon;image/png;base64,{contentBytes}"

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