Crop a big picture into several small size pictures
Is there a a way with GIMP editor to crop a big picture into several small equal sized pictures? So when all those small pictures connected in order would make a big picture.
Define Image > Guides > New Guides (by Percent) at 25% 50% 75% horizontal and vertical resp.
Apply Image > Slice using Guides (in Gimp 2.8. Image > Transform > Guillotine) to slice into subimages:
To export the images in ready to use HTML code we can alternatively use a Slice python-fu script made for this purpose.