Compare PDFs - Diff Two Documents
Compare two PDF documents side-by-side or in overlay mode with highlighted differences. Private - included with Pro.
About This Tool
Compare PDFs spots what changed between two versions of a document. Review side-by-side or in overlay mode, with differences highlighted so nothing slips past your review.
Perfect for verifying edits between document revisions, checking proofs, and catching unintended changes before release.
Comparison runs locally in your browser, keeping both documents private. This is a Pro tool - unlock it with a subscription.
How to Use
Upload both PDFs
Add the original and the revised version to compare.
Choose a mode
Pick side-by-side or overlay comparison.
Review the differences
Scan the highlighted changes between the files.
Export if needed
Download the comparison result for your records.
Use Cases
Revision Review
Verify exactly what changed between document versions.
Proof Checking
Confirm proofs match the approved original.
Contract Verification
Spot differences between contract drafts.
Frequently Asked Questions
Can I compare more than two files?
The tool compares two documents at a time for clear results.
How are differences shown?
Changes are highlighted in side-by-side or overlay views.
Are my documents uploaded?
No - comparison happens entirely in your browser.