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Compare PDF

View two PDF documents side-by-side to spot differences. Visually compare pages or compare extracted text.

Original PDF

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First document

Maximum recommended file size: 100MB

Modified PDF

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Second document

Maximum recommended file size: 100MB

Compare PDF Documents Instantly

Spotting differences between two versions of a document can be tedious. Our free online PDF compare tool makes it easy by analyzing the original and modified files simultaneously. It generates an intuitive side-by-side visual and text-based report, highlighting additions, deletions, and modifications so you never miss a change. Since it runs directly in your browser, your files remain completely private and secure.

How to Compare PDFs

  1. Upload Original PDF: Drag and drop or select the first PDF file (the original version) in the left upload area.
  2. Upload Modified PDF: Drag and drop or select the second PDF file (the modified version) in the right upload area.
  3. Start Comparison: Click the "Compare PDFs" button to analyze the documents.
  4. Review Differences: Toggle between "Visual" mode to see page-by-page differences and "Text" mode to view a line-by-line breakdown of additions and deletions.

FAQ

Upload the original PDF and the modified PDF to our tool. Click "Compare PDFs", and the tool will analyze both documents, providing a side-by-side visual and text comparison to highlight any differences.
Yes, our compare tool has a "Text" view mode that displays a line-by-line diff. Added text is highlighted in green, and deleted text is highlighted in red, making it easy to spot revisions.
For optimal performance in the browser, our tool currently limits the comparison to the first 10 pages of each document.