I'm the guy who made the bot. I'm looking at relaunching this in a way that GitHub are happy with so that you can at least request an optimisation on your repos

I'm the guy who made the bot. I'm looking at relaunching this in a way that GitHub are happy with so that you can at least request an optimisation on your repos. In the meantime, check out http://imageoptim.com/ http://imageoptim.com/