At the moment the Alpine version of pdf2htmlEX uses static versions of FontForge and Poppler which have been compiled against Alpine's standard iconv library.
Unfortunately, the Alpine version of iconv is unable to deal with some 'standard' fonts, and so you might find these fonts are not transferred into the resulting html.
We need to change the buildScripts/getDevLibrariesAlpie and buildScript/createAlpineTarFile scripts to compile FontForge and Poppler using the gnu-libiconv-dev Alpine package