I'm not your downvoter. But see here and earlier here for some of my previous related posts. It would improve your post to articulate your sense in which "KaTeX has a superior quality of writing". — hardmath Mar 17 at 21:57

I'm not your downvoter. But see here and earlier here for some of my previous related posts. It would improve your post to articulate your sense in which "KaTeX has a superior quality of writing". — hardmath Mar 17 at 21:57

Sebastiano: I think that comparison site supports a general proposition that KaTeX parses $\LaTeX$ input more rapidly than MathJax does. However KaTex has been feature poor relative to MathJax during its earliest phases, so speed is not the only consideration. Moreover the comparison site does not seem to me to be representative of how MathJax works at Math.SE; its timings are heavily weighted by "font downloads" of more than one second, something I'm not experiencing here. In any case the quality of rendering here matches or exceeds that which I get using StackEdit (KaTeX).. — hardmath Mar 18 at 3:23

Sebastiano: I think that comparison site supports a general proposition that KaTeX parses $\LaTeX$ input more rapidly than MathJax does. However KaTex has been feature poor relative to MathJax during its earliest phases, so speed is not the only consideration. Moreover the comparison site does not seem to me to be representative of how MathJax works at Math.SE; its timings are heavily weighted by "font downloads" of more than one second, something I'm not experiencing here. In any case the quality of rendering here matches or exceeds that which I get using StackEdit (KaTeX).. — hardmath Mar 18 at 3:23