Every addon creator probably already faced this problem: Whenever it comes to renaming items, blocks or entities, we are still forced to edit the language files. This is always a huge pain: You need to edit around 30 files. The problem gets even bigger if you need to edit the files again because you missed something or you made a mistake.
You might have already guessed it: Working with the language files is completely impracticable. That's why I developed a tool for it: AnyLanguage !

AnyLanguage allows you to write only one .lang file and then generates the other files for you. You can choose the languages you want to edit and you could even add new languages. Another handy feature is that you can choose to auto-translate the text. While this option is enabled, the program uses Google Translator to translate your input.

The output of AnyLanguage is a .zip file containing all language files. Simply put all of these files into the "texts" folder of your resource pack.

Read more about AnyLanguage here...
AnyLanguage was created by solvedDev.