Compare PDF Files Online Free
Process your PDF files securely in your browser
Drop first PDF
Original document
Drop second PDF
Modified document
How it works: Upload two PDF documents to compare them side by side. Navigate through pages to spot differences visually. Works with any PDF type.
Your files never leave your device. 100% private and secure.
How It Works
Upload First PDF
Select the original or first version of your PDF document.
Upload Second PDF
Select the modified or second version to compare against.
Compare
View the documents side by side with differences highlighted.
Frequently Asked Questions
What types of differences are detected?▼
Can I compare PDFs with different page counts?▼
Does it work with scanned PDFs?▼
Can I download a comparison report?▼
About This Tool
Compare two PDF documents with our free PDF comparison tool. Identify differences between PDF versions, contracts, or documents instantly with visual side-by-side comparison. Our PDF diff tool highlights changes, additions, and deletions between documents. Perfect for comparing contract versions, reviewing document revisions, or verifying PDF accuracy. Navigate page by page to spot every difference. The browser-based comparator processes files locally – your documents never leave your device.
Why Use AeroPDF?
100% Private & Secure
Files are processed entirely in your browser. Nothing is uploaded to any server.
Lightning Fast
No waiting for uploads or downloads. Everything happens instantly on your device.
Works Everywhere
Use on any device with a modern browser. Windows, Mac, Linux, or mobile.