For every semester each course gets a new image in our LMS (learning management system). One course, the gaming course ("The Art and Science of Computer Games"), took a bit more time because I'd program a list of objects to create a pattern, e.g., a list of fish with each fish rotated slightly from the previous one. The only concern was getting the image cropped and resized.
For many years, Photopea.com, a free online graphics editor was a quick reliable way to do image editing. The default file type is PhotoShop's PSD file. For the minimal needs of myself and my students Photopea was fine. By minimal I mean cropping, magic selection, and exporting an image at different qualities to see the relationship between file size and quality. Everything else was, as far as I was concerned, a bonus for those who had artistic ability.
When I tried to use Photopea yesterday the app froze, weird things happened when I tried to crop the image. I loaded the image (left below), used the magic wand to select and then delete the background. The crop started out fine, but froze when I tried to remove the pixels (right below).
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