Is there any smart service approved for appian cloud use which converts HTML to

The closest thing I'm aware of is this (forum.appian.com/.../summary), I don't think it will handle an html doc though. I had a case before where I looked into doing this, but ultimately decided against it and found another solution. Rendering html can be very hit or miss unless it's very basic, I also had mixed results converting any doc to pdf. I would try to avoid pairing these two if possible. What's the use case here? You can save the html as a document and let the user download\\print that and let the browser handle rendering.