Briss is a free program that will let you crop a PDF document visually, by drawing rectangles over its pages.

It works great with ebook reading devices, to remove excess margins, or for cropping multiple columns of text to create a page out of each.

Briss is designed to crop PDF pages in batch, but makes a distinction between odd and even pages, as these are often aligned differently in documents (such as ebooks).

It will group all the different page sizes in your document together and will require the user to make cropping decisions for each group of pages that is of a similar size.

It also provides the option to exclude certain pages or page ranges from cropping.

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