File extension .iff refers to Amiga Interchange File Format and allows transferring data between different software applications. Although this format is considered outdated, everyone may come across .iff files once in a while. You are most likely to find an IFF file in a program file for an Electronic Arts game like the Sims, FIFA Soccer, Madden NFL and Sim City.
File extension .iff makes it possible for a set data to be read by many unrelated programs. It allows not only images, but also text to be stored inside an IFF file. In general, this file format was developed to transfer files from Amiga computers – a family of personal computers in the 1980s and 1990s. ImageConverter Plus provides support for the Amiga Interchange File Format and allows converting .iff files into any of the output image formats.