Question 1

What does the Protect / Unprotect PDF tool do?

Accepted Answer

It lets you add a password to lock a PDF so it can't be opened without it, or remove password protection and restrictions from a PDF that's already unlocked or that you have legitimate access to. Both operations run against the file you provide, in whatever state it's currently in.

Question 2

Can this tool remove a password from a PDF if I don't know it?

Accepted Answer

No, it can only unprotect PDFs you already have legitimate access to, meaning either you know the current password or the file has no owner-password restriction to begin with. It is not a password-cracking or recovery tool.

Question 3

Is my PDF or the password I set uploaded anywhere?

Accepted Answer

No, both adding and removing protection happen entirely in your browser, so neither the document nor your chosen password is ever transmitted to a server.

Question 4

How strong is the password protection this tool adds?

Accepted Answer

It applies standard PDF password encryption to restrict opening the file, but as with any password-protected document, the real-world security depends heavily on choosing a strong, hard-to-guess password.

Question 5

Is this feature free and does it require an account?

Accepted Answer

Yes, it's free to use and no account is required.

Frequently asked questions about Protect / Unprotect PDF

What does the Protect / Unprotect PDF tool do?

Can this tool remove a password from a PDF if I don't know it?

Is my PDF or the password I set uploaded anywhere?

How strong is the password protection this tool adds?

Is this feature free and does it require an account?