In this tutorial we will develop an Image Viewer!!! It supports lots of formats: jpg, gif (animated also!), png, tga, psd (!!), and some more.
Maybe I will complete the tutorial with 2 o 3 new features, but I’ll release as a new tutorial (something like, tutorial 4: image viewer improvements, or something like this).
Have fun!!
Cocoa tutorial 03: Developing an Image Viewer