Hi Jürgen, > So, any thoughts on my problem?
sorry for the late reply, work keeps me abnormally busy. The indexing support in TeX4ht was redone last year, it is now possible to use Imakeidx package without any indexing4ht. I also found that it is much more robust to use links to each index entry instead of sections. Here are test files that seems to work. The build file uses Xindy, but it is possible to use Makeindex or Xindex instead. Best regards, Michal
mybuild.mk4
Description: Binary data
\documentclass[oneside]{scrbook}
%\usepackage[utf8]{inputenc}
\usepackage{chngcntr}% http://ctan.org/pkg/chngcntr
\usepackage{lipsum}
\counterwithout{subsubsection}{subsection}
\ifdefined\HCode
\usepackage[noautomatic]{imakeidx}
\else
\usepackage[]{makeidx}
\fi
% \usepackage{tex4ebook}
\usepackage{xcolor}
\usepackage[hyperindex=true]{hyperref}
\usepackage{graphicx}
\makeindex[intoc=true,name=topic,title=Topics]
\makeindex[intoc=true,name=place,title=Places]
\setcounter{secnumdepth}{3}
\setcounter{tocdepth}{3}
\begin{document}
\chapter{Testchapter}
\section{Testsection}
\subsection{Testsubsection}
\subsubsection{Story}
Test\index[topic]{Test}
\chapter{Testchapter 2}
\section{Testsection 2}
\subsubsection{Story 2}
Test\index[topic]{Test}
\printindex[topic]
\printindex[place]
\end{document}
