PDF passwords: open password vs permissions password
Quick answerAn open password stops the file being opened at all. A permissions password lets it open but blocks printing or copying.
Open password
Also called a user password. Without it the PDF will not open at all. This is what most people want when they say "password protect" — use Protect PDF.
Permissions password
Also called an owner password. The file opens normally, but actions like printing, copying text or editing can be restricted. Many PDF readers respect these restrictions; some ignore them.
Which to use
- Sending a bank statement or contract — open password.
- Publishing a document you do not want copied — permissions password, but understand it is a deterrent, not a lock.
Sending the password
Never send the file and the password in the same message — that defeats the purpose. Send the file by email and the password by SMS or a call.
Frequently asked questions
I forgot the password to my own PDF. Can you recover it?
No. A strong open password cannot be recovered. If you know the password, Unlock PDF can remove it.
