PDF file formats are the most used document format in the market. This file format is easily accessed from most of the programs and it is small in size hence can be easily shared. With PDF files, you can easily secure your document with a password. For PDF files that contain personal information then locking them with a password is a necessity. If you access the PDF document more often, then keeping on inserting the password every time can be very frustrating. The good news is that you can remove password from PDF using Adobe reader and other reliable programs.