If you are looking for the decompiler itself, visit https://github.com/jindrapetrik/jpexs-decompiler
List of issues
: The issue tracker is now writable again and logged users can download files too. But note that our support is very LIMITED.
#117 Drag&Drop support
Could be nice to be able drop swf files right onto the FFDec window for opening them.
version 1.6.4 was released this was added, try it
works fine, thanks!