Likely, many users have encountered a situation where the download from any site a pdf file, but it does not open because the password is set to the file, which the authors forgot to specify the document or offer to do it for the money. One solution to this problem - to remove the password for pdf with a special program such as Manyprog PDF Password Recovery. This versatile tool will allow recover pdf password a very short time. As is known, pdf files can be encrypted using two types of passwords: a user password and owner password. If the pdf document user password is set, the file can be opened only by specifying the password. In contrast, the owner password only allows you to restrict access to various actions performed on the pdf document. For example, using the password owner can put a ban on copying or printing. When you open a pdf file requires a password, you can open the document using the password as the user and owner password. But if the password is known only to the user, to remove restrictions on individual manipulation of the document will be impossible without the knowledge of the owner password.
Talking about the format pdf, not to mention its advantages and disadvantages. Currently, this format has found a very wide use, especially for storage in electronic form various types of printed products and documents. Open files in pdf format on any device, regardless of operating system, and the formatting of the document and its appearance remain unchanged and identical to the original. Open this format can be using the free program Adobe Acrobat Reader, which can be easily downloaded from the developers of this format. Pdf files have a small amount, so take up very little space on the PC hard disk. And, of course, the advantage of this format is the ability to customize all kinds of security settings that are applied to a pdf file. The disadvantage of this format can be attributed only difficulty editing. Editor pdf, provided by the creators of the format - the company Adobe, is paid, and the price for it is quite high. In addition, the documents in pdf difficult to work with the text - to copy blocks of text or search.