What is PDF owner password and user password?

What is owner password and user password? I have a password... is owner or user? I have not two passwords...

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The standard security provided by PDF consists of two different methods and two different passwords, 'user password' and 'owner password'. A PDF document may be protected by password for opening ('user' password) and the document may also specify operations that should be restricted even when the document is decrypted: printing; copying text and graphics out of the document; modifying the document; and adding or modifying text notes and AcroForm fields (using 'owner' password).

You can input your password into our PDF Password Remover v3.1 product, our PDF Password Remover v3.1 will decrypt your PDF file automatically.

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