Compare PDF Documents Side by Side
Compare two PDF files page by page with synchronized navigation and zoom. Find changes in contracts, reports, manuscripts, and book proofs without uploading documents.
First PDF File
Drop first PDF here
or click to browse
Second PDF File
Drop second PDF here
or click to browse
Browser-Based Processing
For your privacy, all processing happens directly in your browser. This means:
- Your PDF never leaves your device, ensuring total privacy
- No file size limits typically imposed by server-based tools
- Instant processing without upload/download delays
- Works offline — no internet connection required after the page loads
How to Compare PDF Files
A simple 3-step process to compare PDF documents side by side.
1. Upload Two PDFs
Click "Select First PDF" to upload your first document, then upload the second PDF file. Both files are processed locally and never leave your computer.
2. Configure View
Choose your preferred zoom level, view mode (side-by-side, overlay, or split-screen), and enable page synchronization for easier navigation.
3. Compare & Navigate
Click "Start Comparison" to load both documents, then use Compare text to list added and removed words while the visual panels show layout changes.
Why Use Our PDF Comparison Tool?
Experience intuitive side-by-side comparison with unmatched privacy and flexibility.
100% Private & Secure
All comparison happens in your browser. Your PDFs are never uploaded, ensuring your files remain completely private on your device.
Fast & Free
Experience instant, in-browser comparison with no file size limits or hidden costs. It's completely free, forever.
Page-by-Page Navigation
Navigate through PDF pages synchronously or independently. Compare manuscript drafts, contracts, reports, and book proofs without uploading them.