WP MathJax displays mathematical notation in web browsers, using MathML, LaTeX and ASCIIMath markup on WordPress by using MathJax.js.
WP MathJax is smart enough that loads mathjax.js only when your posts contain mathjax syntax, by detecting the use of shortcode and block. So it will not be loaded on your website everywhere.
If you are not using Guteberg editor and looking for a Markdown editor supporting MathJax, you can also check out my WordPress plugin called the WP Githuber MD, which provides a variety of features not just MathJax, it is worth to try.
Copyright
WP MathJax, Copyright 2020 TerryL.in WP MathJax is distributed under the terms of the GNU GPL
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.