krop is a simple graphical tool to crop the pages of PDF files.

• krop should work on any recent Linux distribution, see how to install krop. I don’t know if krop can be used on Windows or Mac after a sufficient amount of tinkering: please let me know in case you succeed.
• It is written in Python and relies on PyQT, python-poppler-qt5 and PyPDF2 for its functionality.
• It is free software, released under GPLv3+ in the sole hope that you or someone else may find it useful.
• A unique feature of krop, at least to my knowledge, is its ability to automatically split pages into subpages to fit the limited screensize of devices such as eReaders. This is particularly useful, if your eReader does not support convenient scrolling. (In fact, I wrote krop to be able to read mathematical papers on my Nook.)
• Possible alternatives to krop include PDF-Shuffler and brissʻO kēia papa kuhikuhi he hōʻuluʻulu o nā waiwai kūʻai ʻole a me nā lawelawe e kū nei ma ka honua i kēia mau lā. Manaʻo ʻia ka maikaʻi a i ʻole ka lawelawe ʻana me ke kālepa ʻole inā ʻaʻole ia e noi i kekahi mea (ʻaʻohe kālā, ʻaʻohe ʻikepili, ʻaʻohe nānā a me nā mea ʻē aʻe). ʻO kēia ke ʻano maʻemaʻe o ka manuahi a me ka ʻoiaʻiʻo loa. Inā ʻike ʻoe i nā waiwai a me ka lawelawe ʻole kālepa, hiki iā ʻoe ke hoʻouna iā lākou
• Please report bugs to mail@arminstraub.com. Patches with improvements would, of course, be wonderful.