- Extension
- .pgm
- .azw3
- Format
- Binary
- Binary
- Category
- Raster Image
- Ebook
- Developer
- Jef Poskanzer
- Amazon
- 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.
- An AZW3 file is an eBook created in the Kindle Format 8 (KF8), Amazon's successor to the .AZW format. It supports newer features such as HTML5 and CSS3 support as well as many other formatting capabilities. AZW3 files often include DRM protection and are used as the download format for many Amazon eBooks.
- MIME Type
- image/x-portable-graymap
- application/x-mobipocket-ebook
