Enabling LaTeX support using KaTeX

2024-12-25 19:39:00 +0000 - Written by PRASAD MADHURANGA MathematicsHow toLaTeXEngineering

KaTeX is a fast, lightweight library for rendering mathematical expressions on web pages. Integrating KaTeX into your Blogger website enables you to display beautifully formatted mathematical equations and formulas. Below is a comprehensive guide to help you set up and use KaTeX in your Blogger posts.

Step 1: Include KaTeX Libraries

To render equations using KaTeX, you need to include the KaTeX CSS and JavaScript files in your Blogger template.

Log in to Blogger
- Go to your Blogger dashboard and select the blog where you want to implement KaTeX.
Edit HTML Template
- Navigate to Theme > Customize > Edit HTML.
Add KaTeX Links

Paste the following lines inside the <head> tag of your HTML template:


<!-- KaTeX Supports -->
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.18/dist/katex.min.css" integrity="sha384-veTAhWILPOotXm+kbR5uY7dRamYLJf58I7P+hJhjeuc7hsMAkJHTsPahAl0hBST0" crossorigin="anonymous"/>
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.18/dist/katex.min.js" integrity="sha384-v6mkHYHfY/4BWq54f7lQAdtIsoZZIByznQ3ZqN38OL4KCsrxo31SLlPiak7cj/Mg" crossorigin="anonymous"></script>
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.18/dist/contrib/auto-render.min.js" integrity="sha384-hCXGrW6PitJEwbkoStFjeJxv+fSOOQKOPbJxSfM6G5sWZjAyWhXiTIIAmQqnlLlh" crossorigin="anonymous"></script>
  <script>
    document.addEventListener("DOMContentLoaded", function() {
      renderMathInElement(document.body, {
        delimiters: [
          {left: '$$', right: '$$', display: true},
          {left: '$', right: '$', display: false},
          {left: '\\(', right: '\\)', display: false},
          {left: '\\[', right: '\\]', display: true}
        ],
        throwOnError: false
      });
    });
  </script>
    <script src="https://cdn.jsdelivr.net/npm/katex@0.16.18/dist/contrib/copy-tex.min.js" integrity="sha384-HORx6nWi8j5/mYA+y57/9/CZc5z8HnEw4WUZWy5yOn9ToKBv1l58vJaufFAn9Zzi" crossorigin="anonymous"></script>
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.18/dist/contrib/mhchem.min.js" integrity="sha384-F2ptQFZqNJuqfGGl28mIXyQ5kXH48spn7rcoS0Y9psqIKAcZPLd1NzwFlm/bl1mH" crossorigin="anonymous"></script>
  <!-- KaTeX Supports -->

4.Save the changes to your template.

Step 3: Writing KaTeX in Posts

You can now include mathematical expressions in your blog posts using KaTeX.

Compose a Post
- Go to the Blogger editor and write a new post.
Insert LaTeX Expressions
- Write your math expressions using the appropriate delimiters:
  - For inline math, use $...$ (e.g., $E = mc^2$ ). $E = mc^2$
  - For block math, use $$...$$ (e.g., $$\int_{a}^{b} f(x) dx$$). $$\int_{a}^{b} f(x) dx$$
Publish the Post
- Preview the post to ensure the equations render correctly, then publish it.