Launched in 1990, Microsoft Powerpoint is the most popular presentation application in the world. Released as part of the Microsoft Office software package, the application is the de facto standard for presentations. Allowing the user to create dynamic, animated slides, the tool is intuitive and allows for text, images and graphics to be added. The tool benefits from being consistent with Word and Excel in terms of layout and toolbars. The tool also allows the user to incorporate Visual Basic code so that user defined macros can be implemented to allow for non-linear slide transitions. Microsoft have reported that Powerpoint has been installed on over 1 billion computers, emphasising its huge market dominance.
PPT is a binary file format that was used by all Microsoft Powerpoint releases between 1997 - 2003. This has been superseded by Microsoft's open source XML based file formats initially released with Office 2007. The latest version of Microsoft Powerpoint, Powerpoint 2010, allows the user to undertake advanced editing such as embedding video within slides. The XML based file format results in a more efficiently compressed file, thus saving the user storage space.
As part of Microsoft's 2007 suite another open XML document type was introduced. This time in the PowerPoint sphere, PPTX is a Presentation format that stores slides used for slide shows or presentations; like a normal PPT format it may include text, images, and other media; however PPTX is based on the Open XML format and uses ZIP compression for smaller file sizes
A PPTX file is quite unique. The specifications for PPTX are in the ECMA-376 standard for Office Open XML. You can make a PPTX file by zipping up a directory, but the material in the directory has to match an OPC structure, including subfolders that have the content in XML format. Any application that supports XML can access and work with data in the new file format. Just like the DOCX file format, PPTX improves file and data management and data recovery.