Compare PDFs
Compare two PDF documents. Highlight differences between versions.
First PDF (Original)
Upload First PDF
Second PDF (Modified)
Upload Second PDF
About This Tool
Compare PDFs analyzes two PDF documents and highlights the differences between them. Perfect for reviewing document revisions, checking contract changes, or verifying edits.
View documents side-by-side or in overlay mode with differences highlighted. The tool identifies text changes, additions, and deletions.
All comparison happens in your browser, ensuring your documents remain private.
Pro Tips
Use for version control
Compare v1 and v2 of a contract to visually see every change — text additions highlighted in green, deletions in red.
Adjust sensitivity for fine comparisons
Lower sensitivity for high-level change detection or raise it to catch single-character differences between documents.
How to Use
Upload Two PDFs
Upload the original and modified PDF documents.
Compare Documents
View differences highlighted in side-by-side or overlay mode.
Export Results
Download a comparison report or annotated PDF.
Use Cases
Contract Review
Compare contract versions to identify changes.
Document Revision
Review edits between document versions.
Quality Assurance
Verify that only intended changes were made.
Frequently Asked Questions
What types of differences are detected?
Text additions, deletions, modifications, and formatting changes.
Can I compare scanned documents?
Scanned documents should be OCR processed first for text comparison.
Is visual comparison available?
Yes, overlay mode shows visual differences between pages.