Protect PDF

How to password protect a PDF

1. Click the box above or drop your PDF onto it.
2. Type a password twice.
3. Click Protect PDF and download it. It will ask for the password every time it is opened.

Frequently asked questions

How secure is it?

The PDF is encrypted with AES-256, the strongest encryption in the PDF standard. It is as safe as your password, so use a long one; a password generator helps.

What if I forget the password?

The PDF cannot be opened without it, and there is no way to recover it. Keep the original file or save the password somewhere safe.

Will it open in every PDF reader?

AES-256 is supported by Adobe Acrobat and Reader, Chrome, Edge, Firefox, macOS Preview and current phone apps. Some very old readers cannot open it.

Is my PDF or password uploaded?

No. Encryption happens in your browser; neither the file nor the password leaves your device.