>>535619237
It was in this even older thread that I noticed what I thought was ImageMagick fucking up my cropped screenshots, and spent some time trying to understand it before giving up. I just repeated that post's experiment with cropping a screenshot of the Doom II title screen, and again the images look different in xviewer, but they look the same in Firefox as far as I can tell. Neither image actually looks identical in xviewer to the way Firefox displays them, but the cropped one is closer.
Anyway, this is all very interesting to me but ImageMagick isn't a video game so I'll shut up.