Convert HTML to PDF file in Windows Forms

13 Jan 20233 minutes to read

The Syncfusion HTML to PDF converter is a .NET library used to convert HTML or web pages to PDF document in Windows Forms application.

Steps to convert Html to PDF document in Windows Forms

Step 1: Create a new Windows Forms application project.
Convert HTMLToPDF Windows Forms Step1
In project configuration window, name your project and select Create.
Convert HTMLToPDF Windows Forms Step2

Step 2: Install the Syncfusion.HtmlToPdfConverter.WinForms NuGet package as a reference to your WinForms application
Convert HTMLToPDF Windows Forms Step3

Step 3: Add the following namespaces into Form1.Designer.cs file.

  • C#
  • using System;
    using System.Windows.Forms;

    Step 4: Add a new button in Form1.Designer.cs to convert HTML to PDF document as follows.

  • C#
  • private Button btnCreate;
    private Label label;
    private void InitializeComponent()
       btnCreate = new Button();
       label = new Label();
       label.Location = new System.Drawing.Point(0, 40);
       label.Size = new System.Drawing.Size(426, 35);
       label.Text = "Click the button to convert Html to PDF file";
       label.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
       btnCreate.Location = new System.Drawing.Point(180, 110);
       btnCreate.Size = new System.Drawing.Size(85, 26);
       btnCreate.Text = "Convert Html to PDF";
       btnCreate.Click += new EventHandler(btnCreate_Click);
       //Create PDF
       ClientSize = new System.Drawing.Size(450, 150);
       Text = "Convert Html to PDF";

    Step 5: Include the following namespaces in the Form1.cs file.

  • C#
  • using Syncfusion.HtmlConverter;
    using Syncfusion.Pdf;
    using System;

    Step 6: Create the btnCreate_Click event and add the following code in btnCreate_Click to convert HTML to PDF document using Convert method in HtmlToPdfConverter class. The HTML content will be scaled based on the given ViewPortSize property of BlinkConverterSettings class.

  • C#
  • //Initialize HTML to PDF converter.
    HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();
    BlinkConverterSettings blinkConverterSettings = new BlinkConverterSettings();
    //Set Blink viewport size.
    blinkConverterSettings.ViewPortSize = new System.Drawing.Size(1280, 0);
    //Assign Blink converter settings to HTML converter.
    htmlConverter.ConverterSettings = blinkConverterSettings;
    //Convert URL to PDF document.
    PdfDocument document = htmlConverter.Convert("");
    //Create file stream.
    FileStream stream = new FileStream("HTML-to-PDF.pdf", FileMode.CreateNew);
    //Save the document into stream.
    //If the position is not set to '0' then the PDF will be empty.
    stream.Position = 0;
    //Close the document.

    By executing the program, you will get the PDF document as follows.
    Convert HTMLToPDF Windows Forms output

    A complete working sample can be downloaded from Github.