Missing
+ Allow automatically trimming margins of every page individually
+ Make Ghostscript features (like exporting to PDF 1.7) available in krop UI
+ Automatize splitting pages in common ways (for instance, one page into two equally sized pages)
+ Specify aspect ratio of crop regions
+ Clone regions (and keep them linked)
+ Make it possible to save and later reuse regions
+ Preserve meta data, table of contents and bookmarks when cropping
+ Allow translations
+ Shortcuts
+ <del>Is there a clean solution to shut down on CTRL+c? (see [[http://stackoverflow.com/questions/4938723/]])</del>
+ <del>Support PyPDF2 besides pyPDF</del>

Ideas
+ Option to overlay pages in order to improve making selections
+ Better support for handling a large number of files
