diff --git a/make4ht/bm.4ht b/make4ht/bm.4ht
new file mode 100755
index 0000000..8e0cb0d
--- /dev/null
+++ b/make4ht/bm.4ht
@@ -0,0 +1 @@
+\AtBeginDocument{$\newcommand\bm{\boldsymbol}$}
diff --git a/make4ht/learnlatex4ht.cfg b/make4ht/learnlatex4ht.cfg
new file mode 100755
index 0000000..c520d08
--- /dev/null
+++ b/make4ht/learnlatex4ht.cfg
@@ -0,0 +1,9 @@
+\Preamble{xhtml,mathjax}
+\Configure{@BODY}{\IgnorePar
+\HCode{\detokenize{\(}}
+\detokenize{\def\diff}\string{\detokenize\expandafter{\diff}\string}
+\HCode{\detokenize{\)}}
+\par
+}
+\begin{document}
+\EndPreamble
diff --git a/make4ht/mhchem.4ht b/make4ht/mhchem.4ht
new file mode 100755
index 0000000..6b2ee1a
--- /dev/null
+++ b/make4ht/mhchem.4ht
@@ -0,0 +1,2 @@
+\AtBeginDocument{$\def\relax{}\def\unexpanded{}$}
+\def\ce#1{\ensuremath{\unexpanded{\ce{#1}}}}
diff --git a/make4ht/musixtex.4ht b/make4ht/musixtex.4ht
new file mode 100755
index 0000000..4e7c9e2
--- /dev/null
+++ b/make4ht/musixtex.4ht
@@ -0,0 +1,11 @@
+\newtoks\xsktoks 
+\def\ImageAlt{\afterassignment\setimg\xsktoks} 
+\def\setimg{\Picture*[\HCode{\the\xsktoks}]{}\the\xsktoks\EndPicture} 
+
+\Hinput{musixtex}
+
+\let\htmusic\music
+\let\endhtmusic\endmusic
+\DeclareDocumentEnvironment{music}{b}
+{\ImageAlt{\begin{htmusic}\scantokens{#1}\end{htmusic}}}
+{}
diff --git a/make4ht/xskak.4ht b/make4ht/xskak.4ht
new file mode 100755
index 0000000..52a1102
--- /dev/null
+++ b/make4ht/xskak.4ht
@@ -0,0 +1,35 @@
+
+
+\newtoks\xsktoks 
+\def\ImageAlt{\afterassignment\setimg\xsktoks} 
+\def\setimg{\Picture*[\HCode{\the\xsktoks}]{}\the\xsktoks\EndPicture} 
+
+\newtoks\xsktoksChessboard
+\def\ImageAltChessboard{\afterassignment\setimgChessboard\xsktoksChessboard}
+\def\setimgChessboard{\Picture*[\HCode{\htxskakget{nextfen}}]{}\the\xsktoksChessboard\EndPicture}
+
+\ifdefined\HCode
+\def\pgfsysdriver{pgfsys-dvips.def}
+\fi
+\Hinput{xskak}
+
+\let\htnewchessgame\newchessgame
+\def\newchessgame{%
+\let\chessboard\htchessboard
+\htnewchessgame
+\let\chessboard\hthtchessboard}
+
+\let\htmainline\mainline
+\def\mainline#1{\ImageAlt{\htmainline{#1}}}
+
+\let\htchessboard\chessboard
+\def\chessboard[#1]{%
+\let\xskakget\htxskakget
+\ImageAltChessboard{\htchessboard[#1]}%
+\let\xskakget\hthtxskakget
+}
+\let\hthtchessboard\chessboard
+
+\let\htxskakget\xskakget
+\def\xskakget#1{\ImageAlt{\htxskakget{#1}}}
+\let\hthtxskakget\xskakget