Free PDF Protection Tool

Add password protection to secure your PDF documents
Protect sensitive information with strong encryption
Easy and secure PDF password protection online

Drag PDF file here or click to select

Max 100MB per file

Important Security Notice
  • Remember your password: If you forget the password, the PDF cannot be recovered
  • Use strong passwords: Combine letters, numbers, and special characters
  • Keep passwords secure: Store passwords in a safe location
  • Local processing: All encryption happens in your browser for maximum security

How to Protect PDF Files

1
Upload PDF File

Select your PDF document by clicking "Choose File" or drag and drop it. The file will be processed securely in your browser.

2
Set Passwords

Enter a user password (required to open PDF) and optionally an owner password for full access control.

3
Configure Permissions

Choose what users can do with the PDF: printing, modifying, copying, and annotating. Select encryption level for security.

4
Download Protected PDF

Click "Protect PDF" to apply security settings. Download your password-protected PDF with the chosen encryption and permissions.

Protection Tips:
  • Strong Passwords: Use complex passwords with letters, numbers, and special characters
  • Remember Passwords: Store passwords securely - lost passwords cannot be recovered
  • Permission Control: Customize what users can do with your protected PDF
  • Encryption Levels: Use 256-bit AES for maximum security, 128-bit RC4 for compatibility

PDF Protection Features

Strong Encryption

128-bit RC4 or 256-bit AES encryption for maximum security

Custom Permissions

Control printing, copying, editing, and annotation permissions

Complete Privacy

All processing happens locally - your files never leave your device