PDFVBASettings.DownsampleGray

Property DownsampleGray As Boolean

The DownsampleGray property determines whether gray bitmaps are downsampled for publishing to PDF. You can use the GrayResolution property to set the resolution.

The following code example publishes the active document to PDF. Color and grayscale bitmaps are downsampled to 72 dpi, and monochrome bitmaps are downsampled to 150 dpi.

Sub Test() 
 With ActiveDocument.PDFSettings 
  .DownsampleColor = True 
  .DownsampleGray = True 
  .DownsampleMono = True 
  .ColorResolution = 72 
  .GrayResolution = 72 
  .MonoResolution = 150 
 End With 
 ActiveDocument.PublishToPDF "C:\MyDocument.pdf" 
End Sub