PDF Encrypt
Protect your PDF files with password encryption. All processing happens in your browser - your files never leave your device.
Click or drag PDF file here
Supports .pdf format, max 50MB
How to Encrypt PDF
- 1Upload your PDF file by clicking or dragging
- 2Set an open password (required to view the PDF)
- 3Optionally set an owner password for full control
- 4Choose permissions (printing, copying, modifying)
- 5Click "Encrypt PDF" and download the protected file
Frequently Asked Questions
What is the difference between user and owner password?▼
The user password (open password) is required to open and view the PDF. The owner password is required to change permissions, remove restrictions, or modify the document. If you only set a user password, anyone with that password can view but not modify the PDF.
Is my PDF file safe during encryption?▼
Yes! All processing happens entirely in your browser using JavaScript. Your PDF file is never uploaded to any server. This ensures maximum security and privacy.
What encryption algorithm is used?▼
PDF encryption uses AES (Advanced Encryption Standard) with 128-bit or 256-bit keys, which is the industry standard for secure document protection.
Can I remove the password later?▼
Yes, you can use our PDF Decrypt tool to remove passwords from protected PDFs, provided you have the correct password.