
PDF files do not encode information that is specific to the application software, hardware, or operating system used to create or view the document. Each PDF file encapsulates a complete description of a 2D document (and, with the advent of Acrobat 3D, embedded 3D documents) that includes the text, fonts, images, and 2D vector graphics that compose the document. Portable Document Format ( PDF) is a file format proprietary to Adobe Systems for representing two-dimensional documents in a device-independent and resolution-independent fixed-layout document format. Other file formats with PDF file extension in our list are very rare and it would not be an exaggeration to say that 99,99% of PDFs found on the Internet are Adobe Portable documents. The pdf file extension is first and foremost associated with Adobe Acrobat Portable Document Format (PDF) documents.
