941 Microsoft Powerpoint for Windows 2007 onwards Presentation From Microsoft Office 2007 onwards, the core output format of MS Powerpoint has been based on the Office Open XML (OOXML) file format. The ISO standard for OOXML is ISO/IEC DIS 29500. An OOXML file format consists of a compressed zip archive that is designated according to which file type it is. Further detail on OOXML can be found within fmt/189 - Microsoft Office Open XML. Text 1 Digital Preservation Department / The National Archives 28 Oct 2009 This format can be identified via a container signature in DROID version 6 or later. The PRONOM database cannot currently represent container signatures. 19 Apr 2012 application/vnd.openxmlformats-officedocument.presentationml.presentation MIME fmt/215 PUID pptx File extension Has lower priority than 1311 Microsoft Office Theme Has lower priority than 2681 PPTX Strict OOXML Presentation Is supertype of 1428 Microsoft PowerPoint Show Is supertype of 1429 Microsoft PowerPoint Macro-Enabled Show Is supertype of 1430 Microsoft PowerPoint Template Is supertype of 1431 Microsoft PowerPoint Macro-Enabled Template Is supertype of 1432 Microsoft PowerPoint Macro-Enabled Add-In Is supertype of 1436 Microsoft PowerPoint Macro-Enabled Slide