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Compare PDF

Load two PDF files and view them side-by-side, page by page. Scroll both documents in sync to quickly spot differences in layout, text, or images. Ideal for reviewing contract revisions, checking that a final print-ready file matches a proof, or auditing changes between report versions. All rendering happens in the browser - neither file is uploaded.

  • Files never leave your device
  • Runs entirely in your browser
  • Free, no account needed
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Frequently asked questions

Does it automatically highlight differences?

The current version shows both documents side by side for visual comparison. Automatic pixel-diff highlighting is on the roadmap.

What if the documents have different numbers of pages?

Both documents are scrolled independently. If one is longer, you can scroll it separately to compare the extra pages.

Can I compare scanned PDFs?

Yes - scanned PDFs are rendered as images in both panes. Differences in scan quality or skew may make comparison harder, but the side-by-side view still helps.

Compare two PDF versions side by side - free, private, instant.

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  • Files never leave your device
  • No upload required
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  • Unlimited use, always free