.LBM File Extension
File TypeDeluxe Paint Bitmap Image
What is an LBM file?
Interchange File Format-Interleaved Bitmap (IFF-ILBM) file; created by Electronic Arts' Deluxe Paint, a graphics editor developed for Amiga systems and later ported to other platforms.
LBM files use formatting similar to Portable Bitmap (.PBM) files. They may be black and white, 16 color, or 256 color images.