Compare PDF
Find every difference between two versions of a PDF — side by side or overlaid, with a list of changes you can step through.
Private by design: your files are processed on your device and never uploaded.
How to compare PDF
- Add the original and the changed version.
- Press “Compare”.
- Step through the changes, switch to Overlay for visual differences, and download the highlighted report.
About Compare PDF
Comparing is the fastest way to check what changed in a revised contract, agreement or report before you sign it.
Questions
Is it safe to compare PDFs here?
Yes. The work happens inside your own browser, so the file is never uploaded to a server — not ours, not anyone's. That makes it safe for contracts, bank statements, ID cards and other private documents.
Does it show formatting changes?
The Overlay view shows any visual change; the change list covers wording.
Is it really free?
Yes — comparing is completely free, with no sign-up, no watermark and no daily limit.
Can I compare PDFs on my phone?
Yes. It works in the browser on Android phones, iPhones, tablets and computers. Nothing to install. It works best in Google Chrome.