private void convertToPdfButton_Click(object sender, EventArgs e) { // Create a HTML to PDF converter object with default settings HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter(); // Set license key received after purchase to use the converter in licensed mode // Leave it not set to use the converter in demo mode htmlToPdfConverter.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og="; // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish htmlToPdfConverter.ConversionDelay = 2; // Set the JPEG Compression Level // A higher compression level produces smaller PDF documents but lower quality images in PDF // Leave it not set for a default compression level htmlToPdfConverter.PdfDocumentOptions.JpegCompressionLevel = int.Parse(jpegCompressionLevelTextBox.Text); // Set images scaling before rendering to PDF // This option enables the converter to scale the images used in HTML down to their display size in HTML before rendering them in PDF. // This can lead to smaller memory consumption during conversion and to a smaller PDF document size but the images quality in PDF can be lower htmlToPdfConverter.PdfDocumentOptions.ImagesScalingEnabled = imagesScalingCheckBox.Checked; Cursor = Cursors.WaitCursor; // Convert HTML to PDF using the settings above string outPdfFile = @"DemoAppFiles\Output\HTML_to_PDF\Images_Scaling_and_JPEG_Compression.pdf"; try { // Convert the HTML page to a PDF document in a memory buffer byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlTextBox.Text); // Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer); } catch (Exception ex) { // The HTML to PDF conversion failed MessageBox.Show(String.Format("HTML to PDF Error. {0}", ex.Message)); return; } finally { Cursor = Cursors.Arrow; } // Open the created PDF document in default PDF viewer try { System.Diagnostics.Process.Start(outPdfFile); } catch (Exception ex) { MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message)); } }