Protect PDF
Encrypt a PDF with AES-256 and a password you choose. Confirm the password before creating the protected download.
How to protect pdf
- Choose a PDF and unlock it if needed.
- Enter and confirm a new opening password.
- Encrypt locally and download the protected PDF.
When to use this tool
Protect a document before sending it through a channel you do not control. Recipients need your password to open the new file; keep a separate safe copy of that password.
Frequently asked questions
No. Passwords are not sent to a server or saved in an account.
The output uses AES-256 encryption and requires the password to open. This version does not provide custom printing or editing permission settings.
Related PDF tools
Your selected files stay on your device. Reset the workspace or close this tab to release the application’s references to them.