It would be wonderful to have a setting/extension that allows any uploaded PNGs and/or SVGs (or other formats) to be optimized as is already suggested at https://www.mediawiki.org/wiki/Manual:Assets . This would help optimize page load times and lessen disk space usage.
(I'd also love a similar extension that automatically converts CMYK images to RGB, but I figure these two ideas are similar enough for the same base extension)
I'd also love a similar extension that automatically converts CMYK images to RGB
As I understand it, this isn't possible to do losslessly, so it wouldn't be a good idea to do so automatically for all CMYK-colorspace images.
automatically converts CMYK images to RGB
LOL, please note ffmpeg does it wrong. It should be converted to sRGB, but neither sRGB, nor CMYK's most common colorspaces are in each other. Yeah. So green will look too green... and all other colors will be wrong too. I am not even talking about FOGRA ICC profiles, that are hard as hell.