pdfCropMargins

The pdfCropMargins program is a command-line application to automatically crop the margins of PDF files. Cropping the margins can make it easier to read the pages of a PDF document -- whether the document is printed or displayed on a screen -- because the display fonts are larger. This program is similar to the Perl script pdfcrop except with many more options.

Features:

• Automatically detects the margins and can crop a given percentage of them.
• Can crop all the pages to the same size to give a uniform appearance (such as in two-up).
• Works on Linux, Windows, Cygwin, and OS X/Darwin.
• Has an optional graphical user interface (GUI) for interactive cropping.
• Renders and analyzes page images to find the bounding boxes, which allows it to deal with noisy scanned PDFs.
• A rudimentary 'undo' capability is implemented by default.
• Can crop pages uniformly based on the nth smallest crop values, which helps with noisy images or documents where a few pages have unwanted markings in their margins.
• Can automatically run a document previewer on the output file.
• The format of automatically-generated output-file names is easily modifiable.
• Preserves document catalog information such as outlines if possible.
• Crops rotated pages according to their appearance in the document viewer.
• Can deal with at least simple cases of password-encrypted files.
• Works with either MuPDF, the pdftoppm program, or the Ghostscript program to find the bounding boxes.
• Can automatically apply a Ghostscript repair operation to attempt to fix corrupt PDF files.