Hi Nasser,
> > It seems like there should be a way to get make4ht to keep the output > > and still stop on error, but that's up to Michal. Specify -a warning > > and also errorstopmode somehow? (And not need to use texfot.) Or > > -a debug and errorstopmode? > > One thing that is possible is to stop the compilation on the first error, using -halt-on-error option. This should make the compilation faster, if your file contains errors. Try this build file: Make:htlatex { latex_par="-halt-on-error"} Best, Michal