How to allow hexo render LaTeX formulas correctly

How to render $\LaTeX$ formulas in hexo blog (theme ‘fluid’)

By default, $\LaTeX$ formulas are not rendered and cannot be correctly displayed. To fix this, the first step is to uninstall the default renderer and install $\KaTeX$ renderer. ( $\mathrm{mathjax}$ is also an alternative, but it may fail to render some complex formulas).

In terminal, cd to your hexo directory, and run the following

npm uninstall hexo-renderer-marked --save

and then

npm install hexo-renderer-markdown-it-plus --save

To get a better view, hexo-math plugin (by hexo official) is recommended, which makes your math text looks better.

npm install hexo-math --save

After that, modify some configurations:

In ‘fluid’ theme _config.fluid.yml, modify the corresponding part to the following:

post:
  math:
    enable: true
    specific: true
    engine: katex

Note that specific means to only enable formula conversion when math: true is found in front-matter, in order to boost loading speed when no formula.

Finally,

hexo clean && hexo generate 

Reference: link