trying but i do not understand

[ldijkman]

treid your example
copied the example from the page
but i think it did not work

https://plnkr.co/plunk/jdFyYMSzz00TAXYP

think your code beautifier is working nice what i have seen in your demo
on
https://mkslanc.github.io/ace-playground/#hello-world
CTRL+SHIFT+b works better as ace beatifier

would like to use it on
https://ldijkman.github.io/Ace_Seventh_Heaven/Hell.html

[mkslanc]

Hi, @ldijkman ! you just need to add

<script src="https://www.unpkg.com/ace-builds@latest/esm-resolver.js"></script>

to include all modes/themes, etc.
or

<script src="https://www.unpkg.com/ace-builds@latest/src-noconflict/mode-html.js"></script>

for html (for example)

and use mode name in ace editor initialization by adding option - mode: "ace/mode/html"