A new version of the free online IES to EULUMDAT Converter was published today at http://ies2eulumdat.appspot.com/.
After a discussion on LinkedIn lighting simulation group, I improved the character set recognition, so even if you do not use the "official" ASCII only encoding, your IES and EULUMDAT will still be converted correctly
The parser was improved to handle more case with funny whitespace characters, empty lines and other clutter that does not really follow the standard. Also IES files with versions before IESNA91 can be handled more or less. Instead of giving an error on incorrect format, the parser will now use the oldest format and try anyway. Not all fields will be filled in.
Up on the list of to do items is handling Type B and Type C photometry. Please provide feedback with the poll on the right hand side.