.PNM - PBMPLUS Portable image format
.PBM - PBMPLUS Portable bitimage format
.PGM - PBMPLUS Portable grayimage format
.PPM - PBMPLUS Portable pixelmap format
Features:
- Pixel formats: 1, 8, 24 bits/pixel.
- Compression: Uncompressed binary, Ascii text.
Supported by: