The PDF Page Comparison tool compares two PDF files locally in the browser. It supports page-number comparison, automatic page matching, side-by-side preview, overlay preview, highlighted differences, and text report export.
Main Features
- Upload two PDF files and compare them locally.
- Compare by page number: fixed pairing such as A page 1 vs B page 1 and A page 2 vs B page 2, for revisions of the same PDF.
- Auto match pages: identify identical or similar pages first, then build A/B pairs for inserted, removed, or reordered pages.
- Review results with side-by-side, overlay, and highlighted difference views.
- Count identical, similar, different, A-only, and B-only pages.
- Download a UTF-8 text comparison report.
How to Use
- Upload PDF A and PDF B.
- Choose the comparison mode, render quality, and fuzzy threshold.
- Click Compare.
- Switch between side-by-side, overlay, and difference views in the result area.
- Download the comparison report when you need an audit record.
Use Cases
- Review contracts, bids, reports, and revised documents.
- Check scanned files, invoices, and vouchers before submission.
- Compare design proofs, papers, course files, and PDF revisions.
- Verify whether pages are missing or out of order after PDF reordering.
Notes
- Encrypted PDFs may need to be decrypted before comparison.
- Higher render quality gives finer difference images but takes longer.
- Automatic matching is based on page signatures and fuzzy hashes, so complex pages should still be reviewed manually.
- The tool does not modify the original PDF files.