Pngout, optipng, deflopt, jpegtran, gifsicle, cwebp, zopfli, and so forth are all command line tools. I'm not really sure why you think that this stuff is mean

Pngout, optipng, deflopt, jpegtran, gifsicle, cwebp, zopfli, and so forth are all command line tools. I'm not really sure why you think that this stuff is meant for designers. Recompressing images is a frontend optimization. It's something you automate. It's a task for machines, not humans.