Compare PDFs (Text)
Compare extracted text content
Overlay Compare
Overlay two pages with opacity slider
This tool processes your files entirely in your browser. Your documents never leave your device.
Input
Base PDF
Drag & drop PDF files here
or Browse Files
PDF, PDF•Max size: 100MB per file
Overlay PDF
Drag & drop PDF files here
or Browse Files
PDF, PDF•Max size: 100MB per file
About This Tool
Compare PDF pages with overlay visualization using our free online overlay comparison tool. Stack pages from two documents and use an opacity slider to reveal differences, with changes highlighted in contrasting colors.
Upload two PDF versions and select pages to compare. The interactive opacity slider lets you fade between versions to spot subtle differences. Red and green highlighting makes changes immediately visible. Perfect for precise visual verification.
All overlay comparison happens locally in your web browser. Both documents never upload to external servers, ensuring complete privacy for architectural drawings, design revisions, and sensitive document comparisons.
Perfect for comparing architectural plan revisions, verifying design changes, checking layout modifications, or reviewing graphical document updates. Ideal for technical drawings, CAD exports, and documents where pixel-level comparison matters. Works with all PDF files from Adobe Acrobat, AutoCAD, and design applications.
Frequently Asked Questions
- Is Overlay Compare free?
- Yes, completely free with no hidden costs, subscriptions, or usage limits. All tools are available at no charge.
- Is it safe to use Overlay Compare?
- Yes, 100% safe. All processing happens locally in your browser. Your files are never uploaded to any server and never leave your device.
- What is the maximum file size?
- You can process files up to 100MB. Since everything runs in your browser, processing speed depends on your device.