- Extension
- .ppm
- .fax
- Format
- Text
- Binary
- Category
- Raster Image
- Fax
- Developer
- Jef Poskanzer
- ITU-T
- Description
- A PPM file is a 24-bit color image formatted using a text format. It stores each pixel with a number from 0 to 65536, which specifies the color of the pixel. PPM files also store the image height and width, whitespace data, and the maximum color value.
- This format is used to compress TIFF images when sending them via fax machines. This format helps reduce the data transmission time. Group 3 eliminates redundant data during compression in order to reduce file size. The standard 10:1 compression ratio may be increased to the user's preferences, but it can lead to a significant loss of image quality.
- MIME Type
- image/x-portable-pixmap
- application/vnd.fax
