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PPT – Microsoft PowerPoint Binary File Format

Format introduction

Microsoft PowerPoint up until 2007 version used a proprietary binary file format called PowerPoint Binary File Format (.PPT) as its primary format. In Microsoft Office 2007 the binary file formats were replaced as the default format by the new XML based Office Open XML formats.

Technical details

The binary format specification has been available from Microsoft on request, but since February 2008 the .ppt format specification can be freely downloaded.