- Extension
- .g4
- .cgm
- Format
- Binary
- Binary
- Category
- Fax
- Vector Image
- Developer
- Computer Fax Systems (CFS)
- World Wide Web Consortium
- 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.
- Vector graphics format designed to support the needs of many graphics applications; originally used for clip art libraries, but newer revisions (based on the ISO/IEC 8632 standard) are now commonly used for CAD drawings.
- MIME Type
- image/g4fax
- image/cgm
