Password protect a PDF
Protect PDFs with AES-256 passwords and optional printing, copying and editing restrictions.
How to use Protect PDF
- 1Add PDFs
- 2Set a password and permissions
- 3Download the protected files
What makes it better
- AES-256 — the strongest standard PDF encryption
- Password strength meter
- Separate owner password and permissions for printing, copying and editing
Good to know
- If you forget the password the file cannot be recovered — store it somewhere safe.
Protect PDF FAQ
Will my original PDF be changed?
No. Your original file stays unchanged. Download the result as a separate file.
What is the difference between open and owner passwords?
The open password is needed to view the PDF. The owner password controls permissions such as printing and copying for people who can open it.
Can I stop people from printing or copying my PDF?
Yes. Turn on “Restrict what people can do”, set an owner password and untick printing, copying or editing. Viewers that respect PDF permissions will block those actions.