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Compare PDFs

Spot the differences between two PDF files, page by page.

🆓 Free ✍️ No sign-up 🔒 100% Private
A
Drop the first PDF (A) here, or click to select
B
Drop the second PDF (B) here, or click to select
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How to compare two PDFs

Upload two PDFs, flip through pages side by side, or highlight the pixel differences.

  1. Add both PDFs: drag & drop them, or click to select.
  2. Use Previous / Next to move through pages. Zoom in to inspect details.
  3. Switch to Highlight differences to see changed areas marked in red.

Frequently asked questions

Is this tool really free?

Yes. Every tool on this site is free, with no account or sign-up required.

Are my files uploaded to your servers?

No. All processing happens in your browser, so your files never leave your device.

What if the two PDFs have different page counts?

Pages are compared one by one, up to the shorter document. Extra pages in the longer file are shown on their own.