Compare PDF Files Online — Find Differences Between Two PDFs
Compare two versions of a PDF side by side: changed, added and removed text is highlighted, plus a visual overlay mode. Free, no upload.
Original (old)
Choose files
or drag and dropPDF
Changed (new)
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or drag and dropPDF
Please choose two PDF files.
Your files never leave your device — everything runs locally in your browser.
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How it works
- 1
Load two PDFs
Choose the old and the new version of the document.
- 2
Compare
The text of both files is matched page by page.
- 3
Review differences
Added text shows in green, removed text in red. Overlay mode also reveals layout changes.
- 4
Finish
Jump from change to change and review exactly what was modified.
Typical uses
- Check contract drafts for changes made by the other party.
- Compare new versions of terms, quotes or policies with the old ones.
- Proofread before sending a document to print.
Tips
- Scanned PDFs have no text — use overlay mode or run OCR first.
- Both files stay on your device, so confidential contracts can be compared safely.
- The more similar the structure of both versions, the more precise the result.
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