Thank you so much guys!!! This was really helpful. I've tried all 3 programs - Briss, Pdfscissors and K2pdfopt, but does this mean that I need to use different crop tools on each page? As I understood I need to crop page by page and I was wondering if I could crop this document with some software that can do "auto-cropping"... Is there such a thing? Of course, this document is not the whole book. This book contains over 350 pages, so it is really difficult for me to crop each page separately... Is there any way to solve this problem? As I understand, even in K2pdfopt I need to specify all parameters for each page... Am I right?
