Unable to send an image attachment to the incoming webhook in Teams

We have a teams bot app, as well as an integration with incoming webhook. The usecase here is, to send an image to a teams channel using incoming webhook. Its working fine when we send the im...

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Prasad_Das-MSFT

Dec 14, 2023

ameenv - To send an image to a Teams channel using an incoming webhook, you can include the image as an attachment in the Adaptive Card payload.

{
  "type": "message",
  "attachments": [
    {
      "contentType": "application/vnd.microsoft.card.adaptive",
      "content": {
        "type": "AdaptiveCard",
        "body": [
          {
            "type": "ActionSet",
            "actions": [
              {
                "type": "Action.OpenUrl",
                "title": "View in Datafi",
                "style": "default",
                "role": "Link",
                "url": "https://abc.us",
                "tooltip": "View in abc"
              }
            ]
          },
          {
            "type": "Image",
            "url": "data&colon;image/jpeg;base64,/xxxxxxxx"
          }
        ],
        "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
        "version": "1.0"
      }
    }
  ]
}

In this example, the image is included as an attachment of type "Image" with the URL set to the base64 encoded image data. Make sure to replace /xxxxxxxx with the actual base64 encoded image data.

Thanks,

Prasad Das

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Unable to send an image attachment to the incoming webhook in Teams

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