Compare PDF Files
Diff two PDFs side by side — spot changed clauses, figures, and pages before signing. Review a 20-page contract revision in minutes — local PDF.js comparison, free, no signup.
Runs on PDF.js
How to Use the Compare PDF Files
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Frequently Asked Questions
How do I spot contract changes?
Upload original and revised: differing paragraphs highlight with page numbers. A 20-page vendor revision reviews in minutes instead of a read-through afternoon.
Text or visual comparison?
Text diff catches wording and figure changes precisely; scanned image-only PDFs compare poorly until OCRed. Run text comparison first, eyeball flagged pages second.
Can I export the diff?
Review happens on-screen; screenshot or note flagged pages for counsel. The tool itself saves nothing — comparison is view-only by design.
Are my contracts uploaded?
No — comparison runs locally in your browser with PDF.js. Documents never leave your device and nothing is stored.
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Last updated October 2026