A PDF (Portable Document Format) file is widely used today. The reason for this is because it is “portable”, as the PDF file type is intended to be. With PDF files, computers, smartphones and other devices can open open them readily using a PDF reader. Examples of well known PDF reader software include Adobe Reader and FoxIt Reader. One good feature about PDF software like Adobe Acrobat is the ability to lock the PDF file for opening and viewing. That is, a password is required before teh PDF file can… Read More
How to unlock user and owner passwords of a PDF file
