Would be nice to have a demo example thing. I have had problems with bad formatting results for these things before and don't want to sign up if I am not sure

Would be nice to have a demo example thing. I have had problems with bad formatting results for these things before and don't want to sign up if I am not sure it will work. Even something like the samples at http://htmltolatex.sourceforge.net/ http://htmltolatex.sourceforge.net/ would be nice