protected void Page_Load(object sender, EventArgs e)

         {

             Image img = new Bitmap(Server.MapPath("/Libs/imgs/btn.png"));

             Response.Write("<img src='data:image/jpeg;base64," + ImageToBase(img, System.Drawing.Imaging.ImageFormat.Jpeg) + "' />");

         }

         public string ImageToBase(Image image, System.Drawing.Imaging.ImageFormat format)

         {

             using (MemoryStream ms = new MemoryStream())

             {

                 // Convert Image to byte[]

                 image.Save(ms, format);

                 byte[] imageBytes = ms.ToArray();

                 // Convert byte[] to Base64 String

                 string base64String = Convert.ToBase64String(imageBytes);

                 return base64String;

             }

         }