PresentationConvertOptionsZoom Property
Specifies the zoom level in percentage. Default is 100. Default zoom is supported till Microsoft Powerpoint 2010. Starting from Microsoft Powerpoint 2013 default zoom is no longer set to document, instead it appears to use the zoom factor of the last document that was opened.

Namespace: GroupDocs.Conversion.Options.Convert
Assembly: GroupDocs.Conversion (in GroupDocs.Conversion.dll) Version: (22.7)
public int Zoom { get; set; }

Property Value

Type: Int32
See Also