You should promote more this solution of yours. Big thumb up!

Thanks!

\immediate and \write18 are disabled. Good.

It looks like a purely javascript* solution that only renders math-mode anyway, so it would be extremely surprising if there was even the possibility to enable them.

*With the possibility of "shelling out" to 2 external services.

> It looks like a purely javascript* solution

Yes, that's what it is. I wanted to maximize its usefulness while minimizing the risks.