imagemagick: magick vs convert, Version 6 vs 7

By Xah Lee. Date: .

Command Line Difference Between Version 6 and 7

in version 7, released in 2016-06, the command line had major change.

New syntax

magick oldFile -op newFile

Old syntax

convert -op oldFile newFile

for backward compatibility, you can use

magick convert -opts oldFile newFile

which uses the old parsing compatible with just convert

🛑 WARNING: if you do this, the processing uses old algorithm.