Protect PDF securely with zero-trust encryption
Add password encryption to secure your PDF document. 100% client-side processing, files never leave your device. 100% client-side processing. Files never leave your device.
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Why Choose MendPDF?
All files processed locally. Nothing uploaded to any server
Local WebAssembly processing keeps your files on your device
No document data collected by servers for local tools
Frequently Asked Questions
How do I password protect a PDF?
Upload your PDF to MendPDF's protect tool, enter your desired password, and download the encrypted file. All encryption happens in your browser.
What encryption does MendPDF use?
MendPDF uses industry-standard AES encryption for PDF password protection, processed entirely client-side.
Can I protect PDFs without uploading them to a server?
Yes. MendPDF's zero-trust architecture means all encryption happens locally in your browser. No files are ever uploaded.
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.