This is a manual C# port of the Validator.nu HTML Parser, a HTML5 parser originally written in Java and (compiled to C++ using the Google Web Toolkit) used by Mozilla's Gecko rendering engine. The port uses the DOM implemented in System.Xml.

Currently the port is based on Validator.nu 1.3.1 and works, as far as I have tested it. However as there are no unit tests, I'm not sure if every detail is working correctly. Tests showed that it is quite fast (about 3-6 times slower than parsing XML using .NET's XDocument API, but I think XML parsing is easier to implement, so this is okay and it's still FAST).

If you want to contribute, maybe you can start here:

• Support for character encodings other than UTF-8
• More C#-ish coding style
• Unit tests
• Look for TODOs in the code