Compare PDF
See words that were added, removed or changed, and a page-by-page visual difference.
Runs in your browser. Files aren’t uploaded.
Original
Drop the original PDF.
Changed version
Drop the PDF to compare with.
How to use Compare PDF
- 1Add the original PDF and the changed version.
- 2Select Compare.
- 3Review the highlighted text changes and step through pages in the visual comparison.
Good to know
- Text comparison uses each PDF’s text layer; scanned PDFs need OCR PDF first.
- Reflowed layouts can make moved text show as removed and added.
- This is a helpful guide, not a legal or certified comparison.
Supported files
- Input
- Two PDFs, up to 150 MB each
- Output
- A highlighted text comparison and a page-by-page visual difference
Processing happens on your device, so very large files depend on its memory. Free, with no sign-up or watermark.
What people use it for
- Check what changed between two contract drafts
- Review edits in a returned document
- Spot layout changes between versions
Compare PDF questions
Something else? Visit support
The visual comparison works on any PDF. Text comparison needs a text layer, so run OCR PDF on scans first.
It’s a helpful guide, not a certified comparison. Reflowed text can appear as removed and added, so check important changes yourself.