Free Online PDF Password Protector
Encrypt PDF documents with AES-256 password protection and custom permissions.
or drag and drop your PDF here
Select a PDF up to ~50MB — apply AES-256 password lock or permission limits
No PDF? Try a sample:
PDF
Sample Invoice (1 Page)PDF
Quarterly Report (2 Pages)How to use
- 1Upload a PDF.
- 2Set a password to open the file, restrict permissions, or both.
- 3Check the password strength meter and confirm the password matches.
- 4Click Download to save the protected PDF.
Privacy: Encryption happens entirely in your browser — the file is never uploaded to a server, and the password you set is never sent or stored anywhere.