"Your software is the best I've ever used for comparing PDFs.", —customer feedback.
Our commercial software is for sale or resale in the US and most countries outside Europe. (Why?)
DiffPDF — compare PDF files quickly and easily: Click to choose one PDF; click to choose another PDF; click Compare. The changes are shown as if you'd used highlighter pens to show added, changed, or deleted text.
This Windows application is our easiest to use and most affordable and popular product. Some customers report it as superior in functionality and far faster than Adobe Acrobat's Diff tool. Your PDFs are safely compared on your own computer without the size or page limits of online tools. Try free for 20 days or buy an annual license key for $149 USD. (See also Why Compare PDFs?)
comparepdfcmd — compare PDF
files. In a console (i.e., in a Command Prompt window opened by running
cmd.exe) enter, e.g.,
comparepdfcmd.exe -r report.pdf old.pdf new.pdf and see
any differences highlighted in report.pdf.
Cloud-free: your PDFs are safely compared on your own computer without
the size or page limits of online tools.
This commercial console (command line) program for Windows is ideal for more technical users doing testing, quality assurance, and scripted comparisons, and it is even faster than DiffPDF. Try free for 20 days or buy an annual license key for $199 USD. (See also Why Compare PDFs?)
C:\> comparepdfcmd.exe
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