More in Edit & Security
About this tool
A closer look at Protect PDF
Protect PDF encrypts a PDF with a password using local browser encryption. Set a password (minimum 8 characters), confirm it, and download the protected file.
Supported files
PDF (.pdf)
How to use it
- 1Upload PDF
- 2Enter password
- 3Download protected PDF
What you can use it for
- Adding password protection before sending a sensitive file.
- Protecting files you store on shared drives.
- Enforcing a password on client-facing documents.
What to keep in mind
- Encryption is applied locally with a single user/owner password.
- Restrict printing/copying/editing options are best-effort; support varies by PDF reader.
- Encrypted PDFs must be unlocked with Unlock PDF before further editing.
Related tools
Frequently asked questions
What is the minimum password length?
8 characters.
Is my password sent anywhere?
No — encryption and restriction flags are applied locally in the browser.
Can readers still print or copy the file?
Restriction flags are best-effort and support varies between PDF readers; the password is the primary protection.