The Desymbolizer converts text and icons which have been created to only display correctly when using the Symbol font into the Unicode equivalent, which displays correctly everywhere. If you have no such text and want to try it out, you can create some at greekbible.com.
Paste text designed for the Symbol font here:
The mapping from Symbol to Unicode was created using this reference. The code for this application is available under the terms of the GNU General Public Licence.