- Extension
- .pnm
- .rb
- Format
- Binary
- Text
- Category
- Raster Image
- Ebook
- Developer
- Jef Poskanzer
- NuvoMedia
- Description
- The PNM (Portable Any Map Image) file format is a subset of the broader Netpbm format, designed for storing various types of digital images. It acts as an umbrella term for three specific types of grayscale, color, and black-and-white images, represented by PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap) formats respectively. PNM files are known for their simplicity and ease of conversion to other image formats.
- RB is an eBook file format that was developed by NuvoMedia. It was first used in Nuvo Media’s Rocket eBook device. It contains the contents of the book in HTML form.
- MIME Type
- application/x-portable-anymap
- application/x-rocketebook
