public static string UserImageUrl(this UrlHelper urlHelper, string email, int?size = null)
{
var sizeValue = size.HasValue ? size.Value : GetGravatarDefaultSize(urlHelper);
// Remove the leading "http:" from the Gravatar URL, so that the request will automatically use HTTPS in that context.
return(Gravatar.Url(email, size: sizeValue).Remove(0, 5));
}
