- Extension
- .pbm
- .g4
- Format
- Binary
- Binary
- Category
- Raster Image
- Fax
- Developer
- Wolfgang Hoschek
- Computer Fax Systems (CFS)
- Description
- 1-bit black and white image; formatted in text format; basic raster image format in which each pixel is represented by a byte that contains a 1 or 0; 1 represents black and 0 represents white pixels.
- Group 4 (G4) used for black and white lossless compression to maintain high-quality images, commonly used in TIFF format compression by fax machines. A picture is seen as black dots and lines on a blank page; the fewer the dots and lines are, the lesser the file size.
- MIME Type
- image/x-portable-bitmap
- image/g4fax
