Merge PDF on Windows
Combine multiple PDF files into one document instantly. Works on Windows 10/11 with Edge, Chrome, Firefox. 100% client-side processing. Files never leave your device.
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Why Choose MendPDF?
Works on Windows 10 and 11 with Edge, Chrome, and Firefox
No installer or .exe download required
Full touch-screen support for Surface and tablets
Frequently Asked Questions
How do I merge PDF files online for free?
Simply drag and drop your PDF files into MendPDF's merge tool. All processing happens locally in your browser — no uploads, no servers, completely free.
Is it safe to merge PDFs online?
Yes. MendPDF uses 100% client-side WebAssembly processing. Your files never leave your device. This zero-trust architecture means there's zero risk of data breaches.
Can I merge PDFs on Mac and Windows?
Absolutely. MendPDF works on any modern browser including Safari, Chrome, Firefox, and Edge on both macOS and Windows.
Zero-Trust Architecture
MendPDF uses 100% client-side WebAssembly processing. Files never leave the device. Zero-Trust architecture. No server uploads. All PDF manipulation happens locally in your browser, ensuring complete data privacy and security.