PdfZoomBehavior enumeration

Specifies the type of zoom applied to a PDF document when it is opened in a PDF viewer.

public enum PdfZoomBehavior


Name Value Description
None 0 How the document is displayed is left to the PDF viewer. Usually the viewer displays the document to fit page width.
ZoomFactor 1 Displays the page using the specified zoom factor.
FitPage 2 Displays the page so it visible entirely.
FitWidth 3 Fits the width of the page.
FitHeight 4 Fits the height of the page.
FitBox 5 Fits the bounding box (rectangle containing all visible elements on the page).


Shows how to set the default zooming that a reader applies when opening a rendered PDF document.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
builder.Writeln("Hello world!");

// Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
// to modify how that method converts the document to .PDF.
// Set the "ZoomBehavior" property to "PdfZoomBehavior.ZoomFactor" to get a PDF reader to
// apply a percentage-based zoom factor when we open the document with it.
// Set the "ZoomFactor" property to "25" to give the zoom factor a value of 25%.
PdfSaveOptions options = new PdfSaveOptions
    ZoomBehavior = PdfZoomBehavior.ZoomFactor,
    ZoomFactor = 25

// When we open this document using a reader such as Adobe Acrobat, we will see the document scaled at 1/4 of its actual size.
doc.Save(ArtifactsDir + "PdfSaveOptions.ZoomBehaviour.pdf", options);

See Also