⚡ SnapSum

PDF Protect

Encrypt your PDF with a password. Runs entirely in your browser.

Note: This tool uses AES-256-GCM browser encryption. The output is an encrypted file (not a standard password-protected PDF). To decrypt, use our PDF Unlock tool with the same password.
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Drop your PDF here or click to browse

How to Protect a PDF

  1. Upload your PDF file.
  2. Enter a strong password.
  3. Click "Encrypt PDF" and download the encrypted file.
  4. To decrypt later, use our PDF Unlock tool.

FAQ

What encryption is used?

AES-256-GCM with PBKDF2 key derivation (100,000 iterations). This is industry-standard encryption.

Is this a standard password-protected PDF?

No. Standard PDF encryption requires server-side processing. This tool creates an AES-encrypted file that can be decrypted using our PDF Unlock tool.

Can I recover a forgotten password?

No. There is no backdoor. Please store your password safely.