PdfSaveOptions.DownsampleOptions property

Allows to specify downsample options.

public DownsampleOptions DownsampleOptions { get; set; }


Shows how to change the resolution of images in the PDF document.

Document doc = new Document(MyDir + "Images.docx");

// Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
// to modify how that method converts the document to .PDF.
PdfSaveOptions options = new PdfSaveOptions();

// By default, Aspose.Words downsample all images in a document that we save to PDF to 220 ppi.
Assert.AreEqual(220, options.DownsampleOptions.Resolution);
Assert.AreEqual(0, options.DownsampleOptions.ResolutionThreshold);

doc.Save(ArtifactsDir + "PdfSaveOptions.DownsampleOptions.Default.pdf", options);

// Set the "Resolution" property to "36" to downsample all images to 36 ppi.
options.DownsampleOptions.Resolution = 36;

// Set the "ResolutionThreshold" property to only apply the downsampling to
// images with a resolution that is above 128 ppi.
options.DownsampleOptions.ResolutionThreshold = 128;

// Only the first two images from the document will be downsampled at this stage.
doc.Save(ArtifactsDir + "PdfSaveOptions.DownsampleOptions.LowerResolution.pdf", options);

See Also