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batch image resizing. batch image conversion. thumbnailing. making a montage of screenshots or graphs.

many, many use-cases. i use it all the time, it's just more convenient than pixelmator/gimp/photoshop for those tasks.

I always end up using my old standby GraphicConverter (been using it since 1996...) for that kind of stuff since with imagemagick there always seems to be some kind of voodoo you have to invoke once you have a PNG alpha channel, images with EXIF rotation tags, PDF files, color profiles, etc.

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