Questions and postings pertaining to the development of ImageMagick, feature enhancements, and ImageMagick internals. ImageMagick source code and algorithms are discussed here. Usage questions which are too arcane for the normal user list should also be posted here.
Most of the ImageMagick binary and RPM releases include TIFF support. Type
identiy -list format
and see if TIFF is listed. CGM support requires a delegate program, ralcgm. Download and install and ImageMagick should be able to convert CGM files to TIFF.