You can delete the user password as well as other restrictions that affect the file, like read only, print, display, etc.
If you have forgotten your password and need to quickly access your document, whether it be your cell phone bill, bank statement or any other PDF that has economic or personal information, this is the app you need.
It should be noted that the tool will not decipher the passwords of unknown users, but it does work on documents that you have created.
You can start using the app just by right clicking on the file. It then takes no time at all to find the password that you set when you first created it.