It removes all kinds of blocking of your PDF files. Freeware PDF Unlocker is a useful application which will allow you to easily remove the user and proprietary passwords which restrict the correct use of your PDF documents, you will only have to drag them to the programme icon and a new file without the protections will be created.
You must add the text _noPWto the name of the resulting file. This will indicate you that it has no passwords, neither the one which did not allow you to read it nor the one which restricted the printing, copying and gluing functions.
Freeware PDF Unlockerperforms its work at a great speed and with a rate of success of a 100%, thus being the more feasible and convenient software solution to unblock PDF documents apart from being completely free.