Protect PDF

Add password protection and restrict permissions on your PDF files. Files are processed securely on our servers and deleted immediately after use.

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Frequently Asked Questions

How do I password protect a PDF for free?

Upload your PDF to HailPDF's free Protect PDF tool, set a password, and download an encrypted file. Anyone opening it will need the password you chose.

What encryption does HailPDF use to protect PDFs?

HailPDF applies industry-standard 128-bit AES encryption so your protected PDF stays secure against unauthorised access.

Can I remove the password later?

Yes. If you know the password, use the free Unlock PDF tool to remove protection and create an open copy.

Is password protecting a PDF free?

Yes, protecting PDFs is completely free with no signup. Files are encrypted on our servers and deleted immediately after processing.