To open the pdf document of the encrypted password, the easiest way - is to enter the correct password. If this password is lost or was not known, the task becomes more complicated. In this case, you must use a special tool to remove any password from encrypted pdf file, or recover a lost password in an explicit form. Programs that perform this function, there are many. Manyprog PDF Password Recovery - is one of them. This simple and effective tool that allows you to not only recover pdf password or to remove it, but also set a password to the opening pdf file (user password) and certain manipulations with it (owner password). At the end of the article is located video showing the operation with the program.
Speaking about the work for pdf documents, not to mention the programs that allow you to open files pdf. Format pdf (Portable Document Format) was developed by Adobe Systems for storing and viewing of printed products in electronic form. This format is often used for the digitization of books, manuscripts, creation of help files and other documents. Its main advantage is that the documents in pdf format look the same when opened in any program that supports this format and can be opened in any operating system.
One disadvantage of this format is that to open pdf files and work with them, you need to use a special program. To work for pdf documents, there are a considerable number of different instruments. First of all, of course, money from the developer this format - Adobe Acrobat Reader and Adobe Acrobat Pro. The first tool, Adobe Acrobat Reader, a completely free and allows you to open a pdf file and see its contents, but makes it impossible to change anything in it. The second tool, Adobe Acrobat Pro, allows not only to view pdf files and edit them. This means to work with a pdf file is not free, but when you have to often make changes to pdf documents, these costs are fully justified. In addition to these programs, there are many tools from third-party developers, for example, Foxit Reader or Sumatra PDF.