100% FREE TOOL
Password Protect PDF
Add strong password encryption to prevent unauthorized opening of your PDF.
Password Protect PDF
Encrypt and password-protect your confidential PDF documents with 256-bit security.
Drop PDF to secure with password
Processed securely in transient memory. Passwords and content are never stored.
100% Private & SecureNo File Uploaded to ServerInstant Browser Processing
True cryptographic verification and ISO-standard PDF processing.
Passwords are evaluated in transient memory and never saved.
Permanent sanitization guarantees no hidden text leaks.