PDF Guides
How to Password Protect a PDF
Some documents shouldn't open for just anyone who gets the file — tax records, contracts, financial statements, medical information. Adding a password means the PDF stays locked until the correct password is entered, wherever the file ends up.
What password protection actually does
A password-protected PDF is encrypted so it can't be opened without the correct password — not just hidden behind a warning screen. If the file is forwarded, downloaded from a shared drive, or backed up somewhere, it stays locked for anyone without the password.
How to password protect a PDF
Adding a password takes a few steps.
- Upload the PDF you want to lock
- Set a password
- Apply the protection
- Download the encrypted file and share the password separately
Sharing the password safely
A password only protects a file if it's shared through a different channel than the file itself. If you email the PDF, send the password by text or a phone call instead — sending both together in the same email defeats the purpose.
Frequently asked questions
What happens if someone without the password tries to open it?
They'll be prompted for a password and won't be able to view the content until they enter the correct one.
Can I remove the password later if I don't need it anymore?
Yes, a PDF unlock tool can remove the password from a protected file as long as you know what it is.
Should I send the file and password in the same message?
No. Send them through separate channels — for example, email the file and text the password — so a single intercepted message doesn't expose both.