Imagemagick can't do everything GIMP can do. But everything Imagemagick can do can be scripted.
Need to convert 10, or 100, or 1,000, or 1,000,000 images? You might use GIMP for the first. You'd best give it up for the 2nd and further.
On Linux desktop, I had an Imagemagick command in my command history which would trim off the top n pixels of images to remove extraneous elements. Quick to call that up and run it on a new screenshot, or a series of shots, prior to posting online. The job was completed before GIMP would finish initialising.
Need to convert 10, or 100, or 1,000, or 1,000,000 images? You might use GIMP for the first. You'd best give it up for the 2nd and further.
On Linux desktop, I had an Imagemagick command in my command history which would trim off the top n pixels of images to remove extraneous elements. Quick to call that up and run it on a new screenshot, or a series of shots, prior to posting online. The job was completed before GIMP would finish initialising.