Everyone is familiar with PDF (Portable Document Format) files thanks to the free Adobe PDF reader installed on computers. Portable Document Format (PDF) is a specification of the file format and related software products developed by Adobe. The real advantage of PDF files is that they display and print documents that look the same on all computers. The PDF standard allows people in different places to work on the same documents.

Portable Document Format (PDF) is a file format developed by Adobe in the 1990s for presenting documents, including text and image formatting, in a manner independent of application software, hardware, and operating systems. Based on the PostScript language, each PDF file contains a full description of the document with a fixed term, including text, fonts, vector graphics, bitmaps, and other information necessary to display it. PDF was standardized as an open format, ISO 32000, in 2008, and no longer requires any royalties for its implementation.

Today, PDF files may contain content other than flat text and graphics, including logical structuring elements, interactive elements such as annotations and form fields, layers, multimedia (including video content) and 3D objects using U3D or PRC, and various other data formats. The PDF specification also provides encryption and digital signatures, attachments, and metadata to support workflows requiring these functions.

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