PDF Compare Online
Compare two PDF files locally with text extraction, rendered page diff, page-level status, and exportable results.
PDF files up to 25 MB are supported. Each comparison checks up to 50 pages.
Upload PDF A
PDF only · Max 25 MB each
Choose PDFsUpload PDF B
PDF only · Max 25 MB each
Choose PDFsChoose two PDFs to start comparing.
Up to 50 pages are compared per run to keep browser performance predictable.
File size
Choose PDF files up to 25 MB each.
Page range
The first 50 pages are compared in each run.
Scanned PDFs
Image-only pages are compared visually when selectable text is not available.
How to Compare PDFs
- 1. Choose PDFs: Select two PDF files, or choose both files at once from either upload panel.
- 2. Compare: Run the comparison to extract text and render page images locally.
- 3. Review Pages: Use the page list to inspect changed, added, removed, and unchanged pages.
- 4. Switch Views: Check Visual for rendered page differences or Text for selectable text changes.
- 5. Export: Download a text report or per-page difference map when you need a record.
PDF Comparison Limits
FAQ
Are my PDF files uploaded?
No. PDF comparison runs locally in your browser. Your files do not leave your device.
Can it compare scanned PDFs?
Yes. Image-only scanned pages are compared visually. Text differences appear when the PDF contains selectable text.
What happens with long PDFs?
The comparison checks the first 50 pages and shows a warning if either file has more pages.
Can I stop a comparison?
Yes. Use Cancel while comparison is running. The selected files remain available so you can adjust and try again.