Have you tried tex4ht? Maybe it doesn't produce nice output by the default, but it is extremely configurable and it should support all LaTeX out of the box, unlike other solutions such as Pandoc.
I've wrote some basic tutorial about tex4ht configuring [1], lot of information can be found when you search TeX.sx for tex4ht tag [2], for example how to use Mathjax for math rendering[3] or how to include Javascript libraries and some responsive CSS[4]. You can ask tex4ht related questions on TeX.sx or on it's mailing list[5], there is also a issue tracker[6].