🔒 Password Protect PDF

Encrypt your PDF with AES-256 encryption to secure sensitive information. The encrypted PDF can be decrypted by uploading it back here with your password.

🔒 Military-Grade Encryption: Your PDF will be encrypted with AES-256 (same encryption used by banks and military). All processing happens in your browser - your files never leave your device.

📥 To Decrypt an Encrypted PDF:

If you have an encrypted PDF (starts with "protected_"), simply:

  1. Upload the encrypted PDF file above
  2. Enter the password you used to encrypt it
  3. Click the decrypt button that will appear

How It Works

Our PDF encryption tool uses AES-256 (Advanced Encryption Standard with 256-bit keys), the same military-grade encryption used by governments and financial institutions worldwide. Your PDF is encrypted entirely in your browser - no data is ever uploaded to our servers.

Encryption Process

  1. Password Derivation: Your password is converted to a 256-bit encryption key using PBKDF2 with 100,000 iterations
  2. PDF Encryption: The entire PDF is encrypted using AES-256-GCM with a unique initialization vector
  3. Secure Storage: The encrypted data is embedded in a protected PDF file that can only be decrypted with the correct password

Decryption Process

  1. Upload your encrypted .enc file
  2. Enter the password you used during encryption
  3. Click "Decrypt PDF" to download the original PDF

Security Features

  • AES-256 Encryption: Military-grade encryption standard
  • PBKDF2 Key Derivation: 100,000 iterations protect against brute-force attacks
  • Unique Salt & IV: Each encryption uses random values for maximum security
  • Client-Side Processing: All encryption happens in your browser - zero server uploads
  • No Password Recovery: Passwords cannot be recovered - keep them safe!

Security Best Practices

  • Use passwords with at least 12 characters including uppercase, lowercase, numbers, and symbols
  • Avoid common words, phrases, or personal information
  • Use different passwords for different documents
  • Store passwords securely using a password manager like 1Password or Bitwarden
  • Keep backup copies of important encrypted files
  • Test decryption immediately after encryption to verify your password works