DefaultWebOptions Object (PowerPoint)
Contains global application-level attributes used by Microsoft PowerPoint when you publish or save a complete or partial presentation as a Web page or when you open a Web page.
Remarks
You can return or set attributes either at the application (global) level or at the presentation level. (Note that attribute values can be different from one presentation to another, depending on the attribute value at the time the presentation was saved.) Presentation-level attribute settings override application-level attribute settings. Presentation-level attributes are contained in the WebOptions object.
Example
Use the DefaultWebOptions property to return the DefaultWebOptions object. The following example checks to see whether PNG (Portable Network Graphics) are allowed as an image format, and then sets the strImageFileType variable accordingly.
Set objAppWebOptions = Application.DefaultWebOptions
With objAppWebOptions
If .AllowPNG = True Then
strImageFileType = "PNG"
Else
strImageFileType = "JPG"
End If
End With