PPTX
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Office Open XML (OOXML) Powerpoint (.PPTX) is the default file format for documents used by Microsoft Powerpoint as of Powerpoint 2007. The format can be read by the Open Source OpenOffice and LibreOffice suites.
The file extension is .pptx and the approved MIME type is application/vnd.openxmlformats-officedocument.presentationml.presentation.
History
This (along with the other Office Open XML items DOCX and XLSX) was initially standardized as ECMA-376 in 2006. Three formats of this standard have been produced; the second version also corresponds to ISO/IEC 29500. OOXML may not completely comply with the latter as of 2012.
