Can I set different user and owner passwords?

Yes. The user password is required to open the PDF. The owner password controls permissions like printing and copying.

Password Protect PDF - Free PDF Encryptor

Q: What type of encryption is used?

128-bit RC4 encryption as supported by pdf-lib. This protects against casual access. For highly sensitive documents consider additional security measures.

Q: Is my PDF uploaded anywhere?

No. All processing happens entirely in your browser using pdf-lib. Your PDF never leaves your device.

Add password protection to any PDF file in your browser. Customize permissions. No upload, 100% private, works offline.

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Your PDF never leaves your browser. All encryption happens locally. No upload, no server.

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Password *

Confirm Password *

Permissions for recipient

Allow Printing Allow Copying Text Allow Editing

Frequently Asked Questions

What type of encryption is used?

AES-256 encryption via qpdf — the same encryption level used by Adobe Acrobat. This is enforced by all modern PDF viewers including Chrome, Firefox, Edge, and Adobe Reader. Store the password safely — there is no recovery.

Can I restrict printing or copying?

Yes. Use the permissions checkboxes to allow or restrict printing, copying text, and editing the PDF.

Is my PDF uploaded anywhere?

No. All encryption happens in your browser using pdf-lib. Your file never leaves your device.