JavaScript Object Notation
You can use Sublime Text to install on Ubuntu
sudo snap install sublime-text --classic
CMD + SHIFT + P > Install package > find the Pretty JSON package and install it
Define the key to call Preferences > Key Bindings, add:
[
{ "keys": [ "ctrl+alt+j" ], "command": "pretty_json" }
]
Hot keys Ctrl + Alt + J to call Pretty JSON (watch video)