PDF comparison utility
Diffpdf is a PDF comparison tool that shows the differences in PDF files either textually or visually.
Download Diffpdf Portable
Version 2.1.3 for Windows, Multilingual
Diffpdf Portable works best with the PortableApps.com Platform
By default the comparison is of the text on each pair of pages, but comparing the appearance of pages is also supported (for example, if a diagram is changed or if a paragraph is reformatted). It is also possible to compare particular pages or page ranges. For example, if there are two versions of a PDF file, one with pages 1-12 and the other with pages 1-13 because of an extra page having been added as page 4, they can be compared by specifying two page ranges, 1-12 for the first and 1-3, 5-13 for the second. This will make DiffPDF compare pages in the pairs (1, 1), (2, 2), (3, 3), (4, 5), (5, 6), and so on, to (12, 13).
Changing Language: The language will switch to match the host OS (English, Czech, German, French). You can force a language by moving the AppNamePortable.ini file to the DiffpdfPortable directory, renaming to DiffpdfPortable.ini and altering AdditionalParameters= to be AdditionalParameters=fr or another language of your choice.