When we reload a page with MathJax in it, the math format is like this for a second:


After a second it becomes the desired MathJax.

Is the intermediate format in Sans-Serif? Why doesn't MathJax show up immediately? Why does it have to first look like that and then change to the desired format while the $s are used for MathJax?


1 Answer 1


It’s because MathJax version 2 is slow.

There are faster alternatives. If Stack Exchange used MathJax V3 as previously discussed at this question, or used KaTeX, then rendering would be nearly instant. Sadly, we do not, so we are stuck with waiting tens of seconds to render pages with large amounts of math code.

  • 1
    $\begingroup$ It's because MathJax V2 is slower than KaTeX. MathJax V3, which has been out for several years, is of comparable speed and much more feature rich. $\endgroup$ Commented Dec 5, 2023 at 18:29
  • $\begingroup$ @MarkMcClure I edited to address your comment. $\endgroup$ Commented Dec 5, 2023 at 18:46
  • $\begingroup$ Was I right about the name of that intermediate format? Is it sans-serif? $\endgroup$ Commented Dec 6, 2023 at 6:16
  • $\begingroup$ So, a Gauss elimination of an $8 \times 8$ matrix might give you an excuse for installing another tool? :-) $\endgroup$
    – Dominique
    Commented Dec 6, 2023 at 10:46

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