pdf-diff

This program creates an image-based difference of two PDF files using PDFTK and ImageMagick.

Requirements

You need to have the following installed:

• standard system tools
• bash
• mktemp
• pdftk
• compare (provided by ImageMagick)

Installation

Execute as root:

make install

Usage

Run the program like this:

pdf-diff orig.pdf new.pdf diff.pdf

You can set the DENSITY environment variable if you'd like to increase/decrease the resolution of the diff. The default is 150x150.

Limitations

The input files must have the same number of pages, not exceeding 9999 pages each.