Hi and thank you for your excellent work.
We have tried it on websites with the latin characters and works out of the box. :)
Still. When trying to use fnc on images like this one or this (that is the greek alphabet) all we get is underscores. Please have a look either by downloading the file and trying to upload it to the media library or saving the file using the Insert from URL or the Grab and Save plugin.
It would be great if we could use it for NON-Latin characters (greek in our case).
Can you please have a look?