How to Password-Protect a PDF (and Remove a Password)
Encrypt a PDF with a password so only the right people can open it — and remove a password you already know. Step-by-step guide, free and private.
Short answer: Open the Protect PDF tool, upload your file, set a strong password, and download the encrypted PDF. To remove a password you know, use the Unlock PDF tool. Anyone opening the protected file will need the password.
Password protection encrypts the document so it can't be opened without the key. It's the right tool for sending confidential files — invoices, contracts, records — over email or shared drives.
How to password-protect a PDF
- Upload your PDF to the Protect PDF tool.
- Enter a strong password. Longer passphrases beat short complex ones.
- Download the encrypted PDF and share the password through a separate channel.
How to remove a password
If you already know the password, use the Unlock PDF tool: upload the file, enter the current password, and download an unencrypted copy. You cannot remove a password you don't know — that's the point of encryption.
Protect vs. redact vs. sign
| Goal | Tool |
|---|---|
| Control who can open the file | Protect PDF (password) |
| Remove sensitive content permanently | Redact PDF |
| Prove who approved a document | Sign PDF |
Password tips
- Use a passphrase of several words — easier to remember, harder to crack.
- Share the password separately from the file (not in the same email).
- Store it in a password manager so a forgotten password doesn't lock you out.
- Redact first if the document contains data that must never be exposed — a password alone doesn't remove the content, it only gates access.