Learn how to visually compare two PDF documents using free GUI-based software, a command-based tool, or an online tool for Windows 11/10.

If you were asked to write a program to compare two PDF files and show the differences, how hard do you think that would be? If you are [serhack], you’ll make it much easier than you might guess.

I recently had need again to compare two different versions of a PDF (text) file. I used a trialware tool a while back that worked for me, but I can't recall what it is.

Do you need to compare two files to see how they're different? On Windows 11 (and 10), you can use the FC command without needing third-party tools, and in this guide, I'll explain how.

The often overlooked Xcode FileMerge app lets you spot what's changed between two files. Here's how to spot the differences using the tool.