Posted: 2006-09-26T18:30:30-07:00
From the command line add -monochrome -compress group4 to create a Group4 compressed bilevel image.
Use https://github.com/ImageMagick/ImageMagick/discussions instead.
http://mirror.imagemagick.org/discourse-server/
http://mirror.imagemagick.org/discourse-server/viewtopic.php?t=7497