my Latex and Tex4ht cheat sheet

Another way is to use HCode
\documentclass{report}
\usepackage{hyperref}
\begin{document}
\tableofcontents
%---------------------
\ifdefined\HCode
\href{foo.htm}{HTML}
\TocAt{chapter,section,subsection,subsubsection}
\fi
\chapter{chapter 1}
\section{section 1 in chapter 1}
\subsection{subsection 1 in section 1 in chapter 1}
\subsection{subsection 2 in section 1 in chapter 1}
\subsubsection{subsubsection 1 subsection 2 in section 1 in chapter 1}
\end{document}
3.6 Adding tex4ht configuration inside latex file instead of using .cfg
One can use \Configure after \begin{document}
These are from Michal Hoftich, a tex4ht expert on the tex4ht mailing list:
(untested, just an idea):
\documentclass{article}
\ifdefined\HCode
\newcommand\html[1]{%
\HCode{#1}%
}%
\else
\newcommand\html[1]{}%
\fi
\begin{document}
\html{