For example: Zoom level: Fit Width, Document OriginalPDF = New Document();Page pdfPage = null; .....pdfPage = OriginalPDF.Pages[3]; pdfPage.CropBox.Height; pdfPage.MediaBox.Height; pdfPage.Rect.Hei…...Width, Document OriginalPDF = new Document(); Page pdfPage = null;...//open document Document doc = new Document(myDir + "input.pdf");...