Thanks for your suggestion. I use plain textarea so that Undo, Spellcheck work seamlessly. Monaco at 5MB+ is bigger than the whole app. Will instead try highlight.js for transparent overlay.

Included a basic "insert math" option to insert LaTeX for math symbols, greek letters, relations & operators. If you work with Math equations regularly, try it out and share any suggestions for improvements.

Try this: https://github.com/arnog/mathlive

There's a language for it (LaTeX).

It looks like this:

\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}

Thanks, mate. If you work with .md files all day, try this for a few days and share feedback or suggestions for improvements.