- Extension
- .g4
- .epub
- Format
- Binary
- Binary
- Category
- Fax
- Ebook
- Developer
- Computer Fax Systems (CFS)
- IDPF
- Description
- 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.
- An EPUB file is a digital ebook saved in the EPUB format, an open XML-based format for digital books and publications. It provides a standard digital publication format for publishers and consumers. EPUB files can be viewed with supporting software programs and hardware devices, such as the Sony Reader and Barnes & Noble Nook.
- MIME Type
- image/g4fax
- application/epub+zip
