Hi @evansaar ...
Re: the image size that can be displayed on Course Cards on the Canvas Dashboard... here is a previous discussion topic that I replied to which may help to answer your question:
So I had to do a little bit of super-sleuthing on this one, but I think I have an answer for you. I was able to look at the past history of the Guide I had linked to above, and I can tell you that before May 11, 2022, Instructure had included the size of the image in the light-blue box at the top of that Guide. But, on May 11, they decided to remove that information. I'm not sure why they removed it, but here is what it said before May 11:
"For best practice, images should be approximately 262 pixels wide by 146 pixels high."
Source: Solved: Re: Sizing image for course card on dash board - Instructure Community (canvaslms.com)
I hope this will help a bit.
