Password Protect & Encrypt PDF
Lock your PDF with AES-256 encryption. Require a secure password to open the file, ensuring your sensitive financial or medical data remains confidential.
Military-Grade Document Security
Emailing an unsecured tax return or bank statement is incredibly dangerous; if the email is intercepted or forwarded, your identity is compromised. This tool allows you to encrypt the actual PDF file using AES encryption. Even if a hacker downloads the file, they cannot view the contents without knowing the exact password you set.
Why Use Our PDF Password Protect?
- AES Encryption: Uses the global standard for cryptographic security.
- Open Password: The document cannot be viewed at all without the password.
- Cross-Platform: The encrypted file opens securely in Adobe, Chrome, or Mac Preview.
- Client-Side Encryption: The encryption math happens on your machine, not our servers.
How to Use the PDF Password Protect
Upload the highly sensitive PDF.
Type a strong, complex password.
Click 'Encrypt Document'.
Download the locked file and email it safely.
Frequently Asked Questions
The data is permanently lost. AES encryption is mathematically impossible to brute-force with current technology. Always keep an unencrypted backup in a safe place.
Once they open the file with the password, they can choose to 'Print to PDF' to create an unsecured copy, but the original file you sent remains encrypted.
All file processing is performed locally in your web browser. We do not upload, store, or view your data.