I work on Geany because it is lightweight and simple. But one future I really miss from using sophisticated and heavy code editors is prettifying the code with a keystroke. But Geany allows external scripts to run on the text in the editor through "custom commands".
So I am on the look out for CLI program that can prettify a webpage containing HTML + CSS + JS? Not just HTML or JS. Prettify the webpage if it contains either HTML or CSS or JS or all of them.