Hi guys! I'm a long-time on-and-off lurker who is finally posting my webcomic, Imaginarium, after working on it since the beginning of the year. It's been a fun and challenging journey, and I'm still figuring out my workflow and how to be as efficient as possible!
I work in Clip Studio, and since it doesn't have an automatic slicer I went in search of one...kept hearing about how amazing ImageMagick is, but couldn't find any step-by-step "ImageMagick for Idiots" guides!
(Although this thread was super helpful, and this thread links to an awesome web-based slicer!)
So, while most of you probably have this figured out already, I hope it'll be helpful if there's anyone (like me!) searching for simple, step-by-step instructions on slicing images with ImageMagick.
I save my episodes in three or four 800px X 20480px images--this slices up into 16 800px X 1280px images.
In my webcomic folder I keep a .txt file with these instructions ('cause I'm forgetful about stuff like this, haha!):
Open command prompt [window win+r] and press enter to open cmod.exe
Paste:
magick convert -crop 800x1280
then drag image twice into the command line (with a space between) and hit enter.
This way I can just grab that line and paste it in the prompt, drag the image into the command, and I don't have to think about typing in the file location or anything. I hope this is helpful for anyone confused by ImageMagick!
Here is a screenshot of the different windows side-by-side as I slice up an episode: