In this article, we are going to learn how to insert an image into PDF file using Itextsharp in asp.net with C#. First, you need to download iTextSharp dll from the internet. Click on the link to download https://github.com/itext/itextsharp.

Related article:

Once file is downloaded, extract it, now you will find 6 more .rar file. Again extract itextsharp-dll-core.rar file, after that add reference of itextsharp.dll to your project.

In code-behind file:

Add below nampespaces.

using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

Complete C# code:

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
    {
        InsertImage();
    }
}

public void InsertImage()
{
// create Filestream object
    FileStream fs = new FileStream(Server.MapPath("Example.pdf"), FileMode.Create);

// create Document object
    Document doc = new Document();

// create PdfWriter instance which will write at file filestream
    PdfWriter.GetInstance(doc, fs);

// opening the dociment
    doc.Open();

// creating paragraph object
    Paragraph para = new Paragraph("Insert an image into pdf using C#.");
    para.Alignment = Element.ALIGN_CENTER;

// adding pargraph to document
    doc.Add(para);

// setting image path
string imagePath = Server.MapPath("Images") + "\\demo.PNG";
// string imagePath = Server.MapPath("Images\\demo.PNG") + "";

    iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imagePath);

    image.Alignment = Element.ALIGN_CENTER;

// set width and height
    image.ScaleToFit(180f, 250f);

// adding image to document
    doc.Add(image);
// closing the document
    doc.Close();
}

Below is the pdf file generated.