From A-PDF: A-PDF Page Crop is a simple, lightning-fast desktop utility program that lets you remove PDF pages blank margins. It also can reorganize normal sized pdf's (A4, B4, Letter etc.) to be readable on relatively small devices (Sony Reader PRS500/PRS505, iRex Iliad, Sony Librie, LBook eReader, Cybook Gen3, Jinke etc.). It provide visual crop marks editor (Crop Box Editor) to crop PDF pages more conveniently.
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