PdfDocumentImagesMaxResolution Property

public int ImagesMaxResolution { get; set; }

Public Property ImagesMaxResolution As Integer
	Get
	Set

Property Value

An image drawn at a higher resolution than this - more pixels than its size on the page needs - is resampled down to it, which makes image-heavy documents smaller. The resolution is measured against the size the image is drawn at; an image drawn in several places keeps enough pixels for the largest.

Applies to the images added with PdfImageElement after it is set and, for a document loaded from an existing PDF, to the images of the whole document when it is saved. A loaded document that arrived signed is not resampled, since that would invalidate its signatures. Gray and RGB images are resampled; image masks, indexed and CMYK images are left as they are. Default value is 0, which keeps every image at its resolution.

Reference