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Convert Image to Base64 (Ready for HTML tag)

Description	Converts an image to Base64 ready to be used in an HTML tag.
Language	C#
Minimum Version	5.1.1+
Created By	Wakewalker
Contributors	-
Date Created	Oct 17, 2017
Date Last Modified	Oct 17, 2017

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using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Drawing;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Text;
using System.Web;

public static class ClipboardFusionHelper
{
    ///<summary>
    /// Base 64 Encoding with URL and Filename Safe Alphabet using UTF-8 character set.
    ///</summary>
    ///<param name="str">The origianl string</param>
    ///<returns>The Base64 encoded string</returns>
    public static string Base64ForUrlEncode(string str)
    {
        byte[] encbuff = Encoding.UTF8.GetBytes(str);
        return HttpServerUtility.UrlTokenEncode(encbuff);
    }
    ///<summary>
    /// Decode Base64 encoded string with URL and Filename Safe Alphabet using UTF-8.
    ///</summary>
    ///<param name="str">Base64 code</param>
    ///<returns>The decoded string.</returns>
    public static string Base64ForUrlDecode(string str)
    {
        byte[] decbuff = HttpServerUtility.UrlTokenDecode(str);
        return Encoding.UTF8.GetString(decbuff);
    } 
    internal static byte[] ImageToByteArray(Image img)
    {
        byte[] byteArray = new byte[0];
        MemoryStream stream = new MemoryStream();
        img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
        stream.Close();
        byteArray = stream.ToArray();
        return byteArray;
    }
	public static string ProcessText(string text)
	{
		if(!Clipboard.ContainsImage())
			return text;
			
		BinaryFormatter binFormatter = new BinaryFormatter();
		using(Image img = Clipboard.GetImage())           
		{
			text = Convert.ToBase64String(ImageToByteArray(img));
		}
		
		//BFS.Dialog.ShowMessageInfo("Convert image to Base64 is finished!");
		return string.Format(@"data:image/gif;base64,{0}", text);
	}
}

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Convert Image to Base64 (Ready for HTML tag)