Secure PDF (Add Password)
Add AES-256 password protection to PDF (client-side via WASM)
🔒 Client-side (Private)📦 Max 50MB
PDF Tools
Select files and configure options
Adds AES-256 password protection to your PDF (client-side, WASM).
About This Converter
How to convert PDF to PDF-SECURE
- Click "Choose File" or drag and drop your PDF file
- Wait for the file to upload and validate
- Click the "Convert" button to start the conversion
- Download your converted PDF-SECURE file
🔒 Privacy & Security
This conversion happens entirely in your browser. Your files never leave your device, ensuring complete privacy and security. No upload, no server processing, no data storage.
Features
- ✓ Free and unlimited conversions
- ✓ No registration required
- ✓ Fast conversion speed
- ✓ High-quality output
- ✓ Complete privacy - files stay on your device
FAQ
Specifics for this converter
What encryption is used?
AES‑256 password protection (via a WASM library).
Can I remove protection later?
Yes, use the “Unlock PDF” tool. You must know the password for locked files.
Does protection affect viewing?
You can open the file in any viewer that supports protected PDFs, with the password.
Is the process private?
Encryption runs locally in your browser.