Glad you like the simple layout!

One of my goals for this is to avoid anything that requires a backend and do everything in the browser. This lets you keep your code private and makes Codewich basically maintenance-free (hopefully). Looks like sass can run in the browser with emscripten, so that should be possible, but seemingly not pug?: https://github.com/pugjs/pug/issues/2655.

Feel free to file an issue for SASS if you'd like to track the progress. https://github.com/calebegg/codewich