using var doc = new Doc();
doc.HtmlOptions.Engine = EngineType.Gecko;
doc.HtmlOptions.ForGecko.AddLinks = true;
// You can store a reference to the filter to reduce code repetition
var options = doc.HtmlOptions.ForGecko;
options.AddLinks = true;
doc.AddImageUrl("http://www.websupergoo.com");
doc.Save("wsg2.pdf");