Can Preview convert .ico (Windows icon) files to .icns (Apple format) ? I have a few Windows games i'm porting over to Mac (with the use of WINE/Wineskin front-end) and while they work 100%, I cannot get the icon correct.. I know the resolution would be 512x512 pixels, and also they look distorted, i've seen that's normal on Mac, however when i go to export and/or save i cannot. I get an error. Is this because I'm "editing" an exiting image, and not creating a new one ? a.k.a copy and paste image.