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PDF files could also be used for workflows in larger organization and out-of-box integration with other software packages. Multiple software vendors including Adobe now provide services for e-signing documents for individuals and teams of various size. This allowed to use PDF file format for document signing over the internet. Recent versions of PDF files also introduced encryption and digital signature support. With PDF every detail of the prepress document could be sent it one file instead of multiple working files specific to certain software packages. This made PDF an important file format for prepress document preparation and transfer. PDF file stores all representation data in text format which allows effective compression and makes PDF format very efficient when transferring information over the internet.Īnother important feature of PDF file format is its ability to embed different types of content like raster images, rich vector graphics and even fonts. Today PDF is used as a primary document format for distributing files over the internet. Another important factor which made PDF format so popular is that Adobe was not charging money for 3rd party developers using the PDF specification. This and availability of Adobe Acrobat Reader on all popular PC and mobile platforms made PDF de-facto standard for portable documents. PDF document is created in a way that its representation adapts to different hardware and software environments it is open on. PDF which stands for Portable Document Format was created as a rich document format independent on platform it is used on. Initial PDF file format specification and implementation was released by Adobe on June 15th, 1993.