IFF

File Format
Name	IFF
Ontology	Electronic File Formats Graphics IFF
Extension(s)	.iff

Overview

IFF (Interchange File Format) is a file format introduced by Electronic Arts on the Commodore Amiga computer. Its structure is similar to RIFF or PNG, using various self-contained chunks to contain different data.

Although IFF is most commonly used as an image format (using the file extension .iff), it can actually hold a lot of different data types. Some examples of IFF files are

• LBM images
• XMI XMidi music files
• 8SVX audio sample data

Resources

• The original EA spec
• IFF chunk registry, defining all known chunks
• ReWiki has a page on IFF, including some details on the rare PBM variant of LBM