Is it possible to directly convert .html files to .exe format.
Unfortunately, it is not possible to convert Hypertext Markup Language Files to Windows Executable Files (.html to .exe conversion). You will not be able to find any conversion utility or online converter capable of such a conversion; despite their false advertisements.
You could try compiling the .html file as an .exe file, which commonly opens HTML pages in embedded browsers. It depends, however, on the Explorer/Edge version. Back in the days, when Windows XP had its peak, Microsoft did provide a tool capable of converting .html to .exe; that doesn't seem to be possible any longer.
The database currently does not contain any html software converter.