Comment by ktpsns

So I digged into the code (engrafo repository) and was quite surprised that -- contrary to the suggestive title -- the method inherits all the problems LaTeXML already has. This is the fact that (for instance compared to the TeXLive distribution), tons of widespread sty files miss a LaTeXML integration and thus the conversion fails for a wide range of papers. Converting a TeX document to XML with LaTeXML really requires a lot of debugging and ideally starting from a plain LaTeX paper/book and compiling with pdflatex and latexml at the same time, making sure nothing breaks.