Post image to private teams channel

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Posted on by mrpowergage

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I'm unsuccessfully trying to post an image to a private teams channel using power automate.

I have the image as both a sharepoint link and as base 64, I can't get either to work.

I can embed an image as html in a teams message, but not the sharepoint image.

I can't get base 64 to work ie <img src="data&colon;image/png;base64, /9j/4AAQSkZJRgABAQ....

I don't think I can use an adaptive card because it is a private channel.

Any ideas / solutions welcome. thanks

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Building flows

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v-litu-msft on at

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Hi @mrpowergage,

Unfortunately, post a message to Microsoft Teams with an image is not supported in Flow by now, there is an idea of it already created in the IDEA forum, you can head to vote it, collect votes to make it come true in the future:

https://powerusers.microsoft.com/t5/Power-Automate-Ideas/Post-a-message-with-a-photo-to-Microsoft-Te...

Best Regards,
Community Support Team _ Lin Tu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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mrpowergage 234 on at

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I managed to work round this by creating a file in onedrive, then getting a thumbnail for the file and using the URL in the Post Message to Teams action

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aploe 14 on at

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Can you make a quick tutorial how exactly you solved this?

I think there is a number of people (including me) who would be very grateful for this.
To post a picture in teams is an often requested feature missing in flows atm.

Would be really appreciated!

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marcosfromeroey 18 on at

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I managed to post a Sharepoint image in a Teams channel. But after a day or two, the image is no more available. Don't know why. Here are the steps for a scheduled flow:
1. Reccurrence
2. List folder (Sharepoint) to get a specific folder of a sharepoint site.
Site address
Folder with images
3. Get file metadata using path (Sharepoint):
Site address
File path dynamically calculated with this expression: gets a random path from all the paths in the folder of step 2 above:

outputs('List_folder')?['body'][rand(0, length(outputs('List_folder')?['body']))]['Path']

4. Get file properties (Sharepoint):
Site address
Library
ItemId (from step 3 above).
5. Post a message (V3) (Teams):
Team
Channel
Message (HTML): <img src="[Thumbnail Large]"> (where [Thumbnail Large] is from step 4 above)

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lionelp 61 on at

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@mrpowergage
Can you make a quick tutorial how exactly you solved this?

I think there is a number of people (including me) who would be very grateful for this.
To post a picture in teams is an often requested feature missing in flows atm.

Would be really appreciated!

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mrpowergage 234 on at

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This is the approach I used.

The limitation is that the Thumbnail URL generated expires after 6 hours, so it only shows in teams for that initial period.

Process I used is:
1) Upload to a temp location on onedrive
2) Get the thumbnail from the new file
3) Set the thumbnail as the source for an image in the teams message.

Hope this is helpful.

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GirishD 14 on at

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@mrpowergage

i am using the same approach

I am saving the images in sharepoint folder and the power flow will post image into teams as soon as a new image is saves in sharepoint folder and the thumbnail is expiring in few hours.

is there any way to set the expiration to Thumbnail URL..like i need Thumbnail URL to be available for 30 days

please help

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mrpowergage 234 on at

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Hi @GirishD ,

Not simply. You can extract the base64, but teams doesn't have a way to display it. You could save it as an image file I'm sure and preserve it that way. Could be worth looking at the Cloudmersive or Experian services also.

Good luck, and let me know if you find anything, I could do with preserving for longer.

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NikitaSharma 10 on at

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Amazing!!! It worked just right for my use case!

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Arun_Kash 2 on at

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Hi mrpowergage, Can you help me with that.

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