For the course listings in Canvas Catalog, is there a limit to the image size we can use? Is there a recommended size?
I'm sorry no one has responded to your question, but just in case you still need an answer, all the Catalog documentation, as well as the image dialog windows in Catalog, have been updated to reference image dimensions rather than image size. For best results in listings, images should be 768 pixels high and 1.050 pixels wide; supported formats include PNG, JPG, GIF, and SVG.
Hope that helps!
If anyone else new to Canvas and the catalog finds this question, here is some more info to be aware of that I wish I'd known early on: The image size is different than the one used when creating the course. So, our compromise was to create a standard cover image size that works in both.
Because the entire team does not have a suitable photo editor, we use Powerpoint. I created a "template" with guidelines that demarcate the left and right sides. When the course creator stays within those margins the dimensions are correct. Then the "current slide" is saved as a jpg, png (whatever you prefer) and we use it in both the course and catalog.
Here are the width and length sizing: How do I add a catalog course listing?
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