With this Pterodactyl addon you can easily edit all kind of config files with a understandable UI.

Pterodactyl v1.x Addon - Config Editor With this Pterodactyl addon you and your customers can easily edit configuration files for all your eggs and servers. You can specify all the configuration files for each egg in the admin area egg settings. Currently possible: .properties, .env, .json, .cfg, .yml and .ini, but for new file types please create a ticket in my discord and I will try to add them as soon as possible. This addon has both a blueprint version and a manual installation included. THIS ADDON IS INSTALLED MULTIPLE TIMES AND ALL FUNCTIONS HAVE BEEN TRIED, IF THE INSTALLATION IS PROPERLY PERFORMED, THE ADDON WILL WORK 100%, BUGG REPORTS ARE ALWAYS WELCOME. Need support? Join my Discord: https://discord.gg/bstVkRFXKx