CGM

File Format
Name	CGM
Ontology	Electronic File Formats Graphics CGM
Extension(s)	.cgm
MIME Type(s)	image/cgm
PRONOM	fmt/306, others
Released	1986

CGM (Computer Graphics Metafile) is a format for storing graphics in multiple manners suited for different devices, including vector, raster, and character-based graphics, but it is primarily used for vector graphics. It is standardized as ISO/IEC 8632, and is used in some specialized fields such as engineering and aviation.

Identifiers

Version	PRONOM
1, ASCII	x-fmt/142
1, binary	fmt/303
2, binary	fmt/304
3, ASCII	fmt/301
3, binary	fmt/305
4, ASCII	fmt/302
4, binary	fmt/306

Links

• Wikipedia article
• CGM File Format Summary, from the Encyclopedia of Graphics File Formats
• Some discussion about what CGM is