Compare Two PDFs

See what changed between two PDFs page by page — visual diff with a before/after slider, locally.

See what changed between two PDFs page by page — visual diff with a before/after slider, locally. Free and 100% private — runs entirely in your browser, nothing is ever uploaded.

About Compare Two PDFs

Compare Two PDFs is a free, browser-based document tool that lets you see what changed between two PDFs page by page — visual diff with a before/after slider, locally. Because it runs entirely on your device, there’s nothing to install, no account to create, and your data is never uploaded to a server.

How to use Compare Two PDFs

  1. Open Compare Two PDFs — it loads in any modern browser, with no sign-up.
  2. Drop your PDF, or click to choose the file.
  3. Get the result instantly, processed locally on your device.
  4. Copy or download the output — what you entered is never sent anywhere.

Frequently asked questions

Is Compare Two PDFs free?
Yes — Compare Two PDFs is completely free, with no account, sign-up or usage limits.
Is my data private?
Yes. Compare Two PDFs runs 100% in your browser, so your files and text are processed on your own device and never uploaded.
Do I need to install anything?
No — Compare Two PDFs works in any modern desktop or mobile browser with nothing to download.