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PBM
Portable Bitmap
Portable Bitmap (PBM) is a lowest common denominator monochrome file format created by Jef Poskanzer in the 1980s. It is a plain text format that uses 0s and 1s to represent image data.
Main usage
PBM is used for storing monochrome images, such as line drawings, black and white images, and simple logos.
- Monochrome
- Plain text format
- Uses 0s and 1s to represent image data
Main features
PPM
Portable Pixmap
Portable Pixmap (PPM) is an image file format used to store and transfer bitmap images. It is a lowest common denominator color image file format that is supported by virtually all image-manipulation programs.
Main usage
PPM is commonly used for storing and transferring images on the internet, as well as for creating and editing images in image-editing programs.
- RGB color model
- 8-bit color depth
- lossless compression