This ensures that documents will be viewed in exactly the same way the author intended regardless of the device used to open the document. pdf document carries with it the necessary meta information required to properly reconstruct the text, fonts, and graphics used to produce the document. The format was not released as an open source document format until 2008, though minimal proprietary technologies still controlled by Adobe Systems exist in the format. pdf file format extension was developed by Adobe systems in 1993 as a means of presenting documents in a consistent manner across different platforms, hardware, operating systems, and applications.
