Compare PDF Files — Find Differences Between Two PDFs Free
Compare two PDF files side by side and see every change highlighted — additions, deletions, and modifications. Free, no sign-up.
How to compare PDFs
- 1Upload the first PDF (original)
- 2Upload the second PDF (modified)
- 3Click 'Compare'
- 4Review highlighted differences and download the result
Features
- Visual page-by-page comparison of two PDF documents
- Highlights added, removed, and changed content
- Downloadable comparison result as a PDF
- Processed in your browser — no files uploaded to a server
When it's useful
- Find what changed between two versions of a contract or agreement
- Verify that a revised document only changed the intended sections
- Check if a translated or reformatted PDF matches the original layout
FAQ
What kinds of differences are shown?
Added text (green), deleted text (red), and modified text (yellow).
Does comparison work for scanned PDFs?
No. Scanned PDFs must have OCR applied first to extract text for comparison.
Can I compare PDFs with different page counts?
Yes. Pages are matched by position — extra pages at the end are flagged as additions.