One related distinction is between sharing a finished screenshot and inspecting an animation before deciding what to share. For an animated GIF, GIF Frames (https://gifframes.com/) decodes the file locally in the browser, lets you pause, scrub, or step through it frame by frame, and exports a selected frame as a PNG. That avoids uploading the whole animation just to find the right still; the exported PNG can then be evaluated with the same lean image-page criteria discussed here.
Comment
One related distinction is between sharing a finished screenshot and inspecting an animation before deciding what to share. For an animated GIF, GIF Frames (https://gifframes.com/) decodes the file locally in the browser, lets you pause, scrub, or step through it frame by frame, and exports a selected frame as a PNG. That avoids uploading the whole animation just to find the right still; the exported PNG can then be evaluated with the same lean image-page criteria discussed here.