ImageOptim is not just for compression, it is for stripping away useless metadata, color palettes and other tricks. For optimal images, you could do something

ImageOptim is not just for compression, it is for stripping away useless metadata, color palettes and other tricks. For optimal images, you could do something like this: 1) Resize the image (And apply the trick from this article) use the proper quality marker (anywhere between 85-95) 2) Run it through Imageoptim If you want a commandline version of ImageOptim, I have had good results with https://github.com/toy/image_optim https://github.com/toy/image_optim