FREE PDF

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

  1. 1Upload two PDF files.
  2. 2Navigate between pages.
  3. 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

What exactly does the comparison show?

It shows the two PDFs side by side or in a diff mode, visually highlighting where text and layout differences occur.

Does it show only text differences, or visual ones too?

It tries to detect both visual differences in how pages look and changes in the text content.

Can I compare PDFs with different page counts?

Yes, comparison works even with different page counts; added/removed pages are also flagged where possible.

Are my documents uploaded to a server for comparison?

No, comparison happens entirely in your browser; neither document leaves your device.