hexo-katexify · 
Hexo plugin for rendering TeX math by katex. This plugin is based on the work of haripo.
Installation
$ npm install hexo-katexify --save
$ npm test
or with yarn
$ yarn add hexo-katexify
$ yarn test
Import katex.min.css (in template)
<head>
<!-- other code goes here -->
<link href="/katexify/katex.min.css" rel="stylesheet" />
</head>
Usage
Inline syntax
$ y = x^2 + 3 $
or display mode syntax
$$
y = x^2 + 3
$$