- Extension
- .pgm
- .jfif
- Format
- Binary
- Binary
- Category
- Raster Image
- Raster Image
- Developer
- Jef Poskanzer
- JPEG Group
- 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.
- The JFIF (JPEG File Interchange Format) format makes it possible to transfer compressed JPEG files across computers. This graphical file format uses a marker to show various parameters not seen in the standard JPEG file — for instance, pixel size, pixel geometry, among others.
- MIME Type
- image/x-portable-graymap
- image/jpeg
