How to store image in cookies

HttpCookie userInfo = new HttpCookie("userInfo");
userInfo["image"] = Image1.ImageUrl;

userInfo["cakename"] = cakename.Text;
userInfo.Expires.Add(new TimeSpan(0, 1, 0));
Response.Cookies.Add(userInfo);
ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Successfully Added to cart');", true);