Is the PDF Lock: Encrypt Your Documents with a Password free to use?

Yes, it is 100% free with no hidden fees or subscriptions.

Absolutely. All processing happens locally in your browser. We never upload or store your data.

Do I need to create an account?

No signup is required. You can start using the tool instantly.

Lock PDF

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PDF Lock: Encrypt Your Documents with a Password

Secure your sensitive PDF documents with 128-bit AES encryption. Add a password to prevent unauthorized viewing, printing, or copying of your confidential data.

Start using the Lock PDF below

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Key Benefits

Strong 128-bit AES encryption
Prevents unauthorized access
100% private - your password never leaves your device

How to Use

1
Upload the PDF you want to protect.
2
Enter and confirm your secure password.
3
Download your encrypted and locked PDF.

Frequently Asked Questions

? What encryption do you use?

We use industry-standard 128-bit AES encryption.

? Can I remove the password later?

Yes, if you have the password, you can use our PDF Unlock tool.

? Is my password safe?

Yes, we never see or store your password; encryption happens in your browser.