I did a quick search for “convert html to gedcom” and found the following:
http://www.starkeffect.com/gedcomviewer/
It uses the add-on “HTML Import Add-on” to: Convert HTML back into GEDCOM. More specifically, import data from trees of HTML documents produced by various other systems, and save the results as GEDCOM. This can be done either from local files or over the Web. Currently handled are various versions of GED2HTML, individual data pages generated by the RootsWeb WorldConnect server, and data pages generated by GEDitCOM using the standard Web page style.
Les Tate
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