Compare PDF

Upload two PDFs to see a side-by-side, page-by-page visual comparison with differences highlighted.

File A — click or drop

File B — click or drop

How to use Compare PDF

Upload File A and File B using the two upload areas.
Compare PDF processes both files directly in your browser using client-side code — nothing is uploaded to a server.
Review the result, then click Download to save it to your device.

Frequently Asked Questions

Is Compare PDF free to use?

Yes, Compare PDF is completely free, with no sign-up, watermark, or software install required.

Is my file safe when I use Compare PDF?

Yes. Compare PDF runs entirely in your browser using client-side JavaScript, so your file is never uploaded to a server or stored anywhere.

Does Compare PDF work on mobile?

Yes, Compare PDF works in any modern browser on desktop, phone, or tablet — no app needed.