CropTool now can crop & uoload into Commons illustrations from djvu and pdf files. We are testing the tool at it.wikisource and we all agree that it is now a surprisingly useful tool for daily wikisource work. Please test it and give some feedback and some more suggestions to its author, Danmichaelo (*thanks Dan!*) The local gadget to call the tool from Commons:: https://commons.wikimedia.org/wiki/MediaWiki:Gadget-CropTool.js should be implemented into wikisource projects with some changes; see it.source version: https://it.wikisource.org/wiki/MediaWiki:Gadget-CropTool.js as an example.
Alex brollo