public ActionResult Index([FromForm] string html) { BlockConverter bc = new BlockConverter(new BlockConverterSettings { Logger = _logger, JsonSerializerSettings = new JsonSerializerSettings { Formatting = Formatting.Indented } }); return(new ContentResult { ContentType = "text/html", StatusCode = (int)HttpStatusCode.OK, Content = $"<pre>{bc.SerializeHtml(html)}</pre>" }); }