Can you add a checkbox for lossy vs lossless compression? If you are doing lossy compression on PNGs, might as well change it to a non-png file. FYI, there are

Can you add a checkbox for lossy vs lossless compression? If you are doing lossy compression on PNGs, might as well change it to a non-png file. FYI, there are great lossless PNG compression algorithms out there - PNGcrush, oxipng, etc. ImageOptim has a bunch built-in.