Review

Compare PDF

Load two versions of a PDF side-by-side. Differences are highlighted in the visual diff and listed in a text summary.

Original (version A)

Drop original PDF here

PDF
Revised (version B)

Drop revised PDF here

PDF

Text changes on this page

About this tool

Compare two PDF files side-by-side to highlight differences in text, layout, and formatting — completely in your browser. Since comparison runs locally on your device, your documents never leave your browser, maintaining full confidentiality.

How to compare pdfs

  1. Drop both PDF files into the compare panels above.
  2. View highlighted differences in text and structure side-by-side.
  3. Download a summary or marked-up version of the differences.

Common uses

  • Checking revised contract drafts against original versions.
  • Verifying layout changes in design or printing proofs.
  • Comparing financial reports or spreadsheets across different periods.

Frequently asked questions

How are differences highlighted?

The tool scans both documents and highlights added, deleted, or changed text and images in contrasting colors.

Can I compare scanned documents?

Yes, if they have selectable text layers. For scanned PDFs without text, consider running OCR first.

Do my files get uploaded to comparison servers?

No. The comparison engine runs client-side in your browser, keeping your documents private.

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