Now also called DiffPDF-FOSS, DiffPDF was free and open-source until version 2.1.3. It was then phased out and superceded by commercial DiffPDF.
Cost / License
- Free
- Open Source (GPL-2.0)
Platforms
- Mac
- Windows
- Linux
- PortableApps.com

DiffPDF is described as 'Can compare two PDF files. It offers two comparison modes: Text and Appearance' and is a File Comparison tool in the development category. There are six alternatives to DiffPDF for a variety of platforms, including Windows, Linux, Mac, iPad and Self-Hosted apps. The best DiffPDF alternative is DiffPDF FOSS, which is both free and Open Source. Other great apps like DiffPDF are Bluebeam Revu, i-net PDFC, Compare It! and diffpdf fork.
Now also called DiffPDF-FOSS, DiffPDF was free and open-source until version 2.1.3. It was then phased out and superceded by commercial DiffPDF.

Bluebeam Revu delivers award-winning PDF creation, editing, markup and collaboration technology to Windows desktop and tablet users. Create and navigate smart, information-rich document sets from converted Microsoft Office and CAD files.


Compare PDFs intelligently with i-net PDFC. It detects content differences—not just text or images—and displays them beautifully, like holding two pages to the light.




Easily compare and merge text files; compare doc, xls and pdf files; prepare comparison reports and printouts.

Seems like Bluebeam can't diff PDFs