- Extension
- .pgm
- .g3
- Format
- Binary
- Binary
- Category
- Raster Image
- Fax
- Developer
- Jef Poskanzer
- CCITT
- Description
- A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.
- Fax image created in the CCITT Group 3 compressed format, which is used for digital transmission of fax data and supports 1 bit per pixel; can be viewed by programs such as GIMP and IrfanView.
- MIME Type
- image/x-portable-graymap
- image/g3fax
