Compare PDF

Compare PDF shows two documents' pages side by side, or highlights the visual differences between them in red — ideal for quickly checking contract revisions or document versions.

How to use

1Upload two PDF files.
2Navigate between pages.
3Choose "Side by side" or "Show differences" view.

Why FREE PDF?

Completely free
No account required
Processing happens in your browser whenever possible
Your files stay yours

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Frequently Asked Questions

How are differences detected?

Both pages are rendered as images and compared pixel by pixel; differing regions are marked in red.