Haven't tried this, but another related tool that works great for re-compressing existing files is AdvanceCOMP [0]. It can lossless optimize zip, png and mng f

Haven't tried this, but another related tool that works great for re-compressing existing files is AdvanceCOMP [0]. It can lossless optimize zip, png and mng files in-place, which is particularly handy for zip files. I used this on a project to drastic reduce the size of generated Powerpoint decks, in order to stay below the email attachment limits for our distro list recipients. Very handy! 0: http://www.advancemame.it/comp-readme http://www.advancemame.it/comp-readme