Compare PDFs
Upload exactly two PDF files to see their pages side-by-side with visual difference highlighting.
Drag & Drop PDF Files Here
Upload exactly two PDF files or click to select
What is LuxPDF?
LuxPDF is an open-source, privacy-focused, and completely free suite of online PDF tools. We believe that your documents are your business, and we are committed to providing powerful, reliable tools without ever collecting your file data. Our platform runs entirely in your browser, ensuring that your files never leave your computer. With no ads, no registration, and no usage limits, LuxPDF offers a seamless and secure experience for all your PDF needs.
Why use our Compare PDFs tool?
- Visual Differences: See pages side-by-side with clear diff overlays to spot changes quickly.
- 100% Private: Runs entirely in your browser. Files never leave your device.
- Open Source & Free: No registration, ads, or limits.
- Works Offline (after load): Once assets load, you can continue comparing without a network connection.
How to use the Compare PDFs tool
- Step 1: Drag and drop exactly two PDF files into the upload area, or click to select them.
- Step 2: Click the "Process Files" button to render both PDFs.
- Step 3: Review the side-by-side pages with difference highlights.
Frequently Asked Questions (FAQ)
No. All processing happens locally in your browser. Your files never leave your device.
The tool renders both pages and computes a pixel diff overlay to visually highlight changes in layout, text rendering, and images.
No, this tool is designed for two-file comparisons only. Please upload exactly two PDFs to enable processing.