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Protect PDF

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Encrypt a PDF with a user password (required to open) and optional owner password. Set granular permissions for printing, copying, modifying, and annotating using preset modes or fully custom per-permission control — all permissions are enforced correctly in AES-256 mode.

Frequently Asked Questions

How do I password-protect a PDF?

Upload your PDF, set a user password (required to open the file), choose an encryption level, and configure permissions. Click Protect to download the encrypted PDF.

What encryption levels are available?

SecurePDF supports 128-bit AES and 256-bit AES encryption. 256-bit AES is recommended for maximum security.

What is the difference between user and owner passwords?

The user password is required to open the PDF. The owner password grants full access to change permissions and remove restrictions, even if the user password is set.

Can I restrict printing and copying?

Yes, choose from presets (View Only, Print Only, Fill Forms, Full Access) or set custom permissions for printing, modifying, copying, and annotations.

Is the encryption secure?

Yes, SecurePDF uses industry-standard AES encryption. Your password is never stored on our servers, and the file is auto-deleted within 1 hour.

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