Easily compare your PDF files. Pdf Comparer allows you to batch compare pdf files. It uses Adobe Acrobat to rasterize the pdf and compares the images. It shows you the most different pages first and usually you don't have to look at all the pages.

Requirements:
* Adobe Acrobat Pro (version 7 or later)

Limitations:
* The number of pages is limited to 25 pages

The license of this software is Free Trial Software, the price is $99.00, you can free download and get a free trial.