img2icns

This app really comes in handy for those of you who like to change the default icons that come on Mac OS X. mg2icns is a a small and simple utility that converts JPEGs, PNGS, TIFs, and GIFs to the ICNS format, which is used for Mac OS X applications’ icons.

For instance, the Country Stamps is a beautiful collection of flag icons that can be used for mail.app. The problem is that they are delivered in a .png format. Just drop the flag that you want to us on the img2icns and it will create a .icns file. It’s this file that you can copy and paste to replace a standard icon. (tutorial here.)

Download