Note that you need the PRO version, as the standard version lacks the ability of redaction. It is a solid part of software and according to my extensive tests the only tool that is really able to redact safely PDF files. PDF Studio PRO from Qoppa ( ): This tool really gives you virtually the whole functionality of Acrobat Pro.It took me rather long time to find a real good alternative to Acrobat Pro: As Acrobat Pro CD is much to expensive for me as a private non-profit user, I was looking for an alternativ. The subject of redation of PDF files seems to be a difficult subject concerning programming.