Lock PDF Printing, Copying, Editing - Version 3.1 Do you have PDF file and want to protect them fromothers? So the best way to protect them is to Lock PDFPrinting, Copying, Editing, etc. But now the questionis that which tool rightly and easily Lock PDF files orwhat is the process to Lock PDF Printing, Copying,Editing. Here you can easily find all your answersrelated to PDF, you just have to download Restrict PDFSoftware to Lock PDF. The Software provides you eitherowner or user Password facility to Lock PDF, so as thatthe unauthorized user is not able to copy, print, edit,open, extract, access the text of PDF files or PDFinformation. For a trial, start with downloadingsoftware�s demo version that locks PDF file up to 25 KBfile size or if want to restrict adobe PDF file morethat 25 KB file size purchase full version of softwareat $25.