Thanks for the advice, everyone. Unfortunately, none of these ideas worked for keeping the correct aspect ratio of my uploaded images. I double-checked the images themselves by uploading to a digital whiteboard problem (Miro), and the puzzle worked well there. Uploading straight to the VTT (instead of the art library) seemed to keep the images' size, but not their correct aspect ratios. Alt-plunking didn't make any difference Using a gridless map didn't work either, although it did prevent the images from transforming to fit a single grid cell As for the conversation about whether players should be able to plunk down a picture at its original size/aspect ratio, that's not for me to decide; I can only humbly suggest that my posting here means that there are at the least a few cases where this functionality would be appreciated. Image-based puzzles are fairly common in RPGs, right? Appreciate the comments. For now, I'll have to either redirect my players to Miro or else drop the puzzle completely.