Posted: 2006-02-20T08:44:36-07:00
Add +matte to your command line to get rid of the alpha channel and produce 24-bit TIFF images.
Use https://github.com/ImageMagick/ImageMagick/discussions instead.
https://imagemagick.com/discourse-server/
https://imagemagick.com/discourse-server/viewtopic.php?t=5908