Ah, i actually meant MathML. I am not sure where i read that it was supposed to be a new feature in html6.
Either way, i mean you could do it on serverside but that means more work. Mathjax has both server side and client side stuff like chosing the scaling.
I made a thread on /sci/ on 4chan as a demonstration. 4chan has used mathjax since at least 2012 when flags and catalogs were introduced for the first time.http://boards.4channel.org/sci/thread/10164188
I mean if you are against using third party tools i guess you can just produce svg's on server using some latex compiler for it.