Files with PPTX extension are presentation files created with popular Microsoft PowerPoint application. Unlike the previous version of presentation file format PPT which was binary, the PPTX format is based on the Microsoft PowerPoint open XML presentation file format.
Learn more about this file format here
GroupDocs.Conversion (in GroupDocs.Conversion.dll) Version: 18.104.22.168 (21.8)
public static readonly PresentationFileType Pptx
Public Shared ReadOnly Pptx As PresentationFileType
static initonly PresentationFileType^ Pptx
static val Pptx: PresentationFileType