Hi @Michelle
Viva Connections is mainly focused on the general issue of app troubleshooting. Since your question is also related to development, which is not in our support scope. I will remove our tag from your thread. Thanks for your understanding!
For the guidance of your questions, I found this answer in the forum. You could check it to see if it is helpful to you.
https://stackoverflow.com/questions/51248299/how-to-use-svg-images-in-adaptive-cards
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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