Enable latex/mathjax in your post only if needed

• Assuming this is an extension of my earlier mathjax post
• This post contains latex or math mode symbols.

• mathjax.js is loaded from the default.html, even for the post/page
• that was not using math/latex symbols it used load mathjax.js unnecessarily.
• 23 HTTP page request vs 4 (with mathjax vs without)
• So, decided to load (mathjax.js) only for post that has math symbols
• Have added custom variable called mathjax.
• But, should remember to set variable to true in post’s front matter

_post/2020-04-01-new-post.md

---
layout: post
title: Enable latex/mathjax in your post only if needed
tags: [jekyll, latex]
mathjax: true
---

_layouts/default.html

{% if page.mathjax == true %}
  {% include mathjax.html %}
{% endif %}

See the full post and default html.