What is PPTX? PPTX, short name for PowerPoint XML, is used as the file extension for presentation files in Microsoft PowerPoint XML Presentation format. .PPTX files are binary files that can be opened by Microsoft PowerPoint and other presentation software. See the sample .PPTX file included below.

File Extension: .PPTX

MIME Type: application/vnd.openxmlformats-officedocument.presentationml.presentation, application/vnd.oasis.opendocument.presentation

File Content: Presentation Document

.PPTX files are presentation files saved in PowerPoint XML Presentation format. Here are the first 64 bytes of a sample .PPTX file dumped in HEX values:

50 4b 03 04 14 00 06 00 08 00 00 00 21 00 be 24 PK..............
4b 71 da 01 00 00 46 0d 00 00 13 00 08 02 5b 43 Kq....F........C
6f 6e 74 65 6e 74 5f 54 79 70 65 73 5d 2e 78 6d ontent_Types..xm
6c 20 a2 04 02 28 a0 00 02 00 00 00 00 00 00 00 l...............

.PPTX files are actually ZIP files. See the ZIP identifier "PK" in the above HEX dump. When an .PPTX file is extracted by a ZIP tool, you will these files and folers:

<DIR>          docProps
<DIR>          ppt
         3,402 [Content_Types].xml
<DIR>          _rels

.PPTX PowerPoint XML file sample: Click sample.pptx to download.

.PPTX PowerPoint XML files can be created and modified by these software:

• Apache OpenOffice - Opens .PPTX PowerPoint Presentation files
• Microsoft Office - Opens and creates .PPTX PowerPoint Presentation files