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Convert Image to Base64 in Power Automate

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Posted on 4 Nov 2021 18:00:23 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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jt_michels 2 on 11 Nov 2023 at 09:01:10

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Re: Convert Image to Base64 in Power Automate

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}"
Nantoanina 11 on 01 Jun 2023 at 11:58:17

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Re: Convert Image to Base64 in Power Automate

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" ??
wael_khanji 151 on 31 Dec 2022 at 17:58:16

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Re: Convert Image to Base64 in Power Automate

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
CFernandes 8,283 Most Valuable Professional on 04 Nov 2021 at 19:09:53

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Re: Convert Image to Base64 in Power Automate

@jokanol1 I am glad that your problem is resolved.😊
jokanol1 22 on 04 Nov 2021 at 18:51:06

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Re: Convert Image to Base64 in Power Automate

It worked, thanks!
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CFernandes 8,283 Most Valuable Professional on 04 Nov 2021 at 18:42:12

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Re: Convert Image to Base64 in Power Automate

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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