[github] How to show math equations in general github's markdown(not github's blog)

After investigating, I've found mathjax can do this. But when I write some example in my markdown file, it doesn't show the correct equations:

I have added this in the head of markdown file:

<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=default"></script>

And type the mathjax statement:

(E=mc^2),$$x_{1,2} = \frac{-b \pm \sqrt{b^2-4ac}}{2b}.$$

But github shows nothing for the math symbols! Please help me, thanks! Tell me how to show math symbols in github markdown pages.

Mathcha is a sophisticated mathematics editor, but it can be used to render individual equations and save them as pure html, which you can then add to your documents as inline html OR you can save as SVG and insert as an image. https://www.mathcha.io/

If just wanted to show math in the browser for yourself, you could try the Chrome extension GitHub with MathJax. It's quite convenient.

I use the below mentioned process to convert equations to markdown. This works very well for me. Its very simple!!

Let's say, I want to represent matrix multiplication equation

Step 1:

Get the script for your formulae from here - https://csrgxtu.github.io/2015/03/20/Writing-Mathematic-Fomulars-in-Markdown/

My example: I wanted to represent Z(i,j)=X(i,k) * Y(k, j); k=1 to n into a summation formulae.



Referencing the website, the script needed was => Z_i_j=\sum_{k=1}^{10} X_i_k * Y_k_j

Step 2:

Use URL encoder - https://www.urlencoder.org/ to convert the script to a valid url

My example:

Step 3:

Use this website to generate the image by copy-pasting the output from Step 2 in the "eq" request parameter - http://www.sciweavers.org/tex2img.php?eq=<b><i>paste-output-here</i></b>&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=

- My example:
http://www.sciweavers.org/tex2img.php?eq=Z_i_j=\sum_{k=1}^{10}%20X_i_k%20*%20Y_k_j&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=

Step 4:

Reference image using markdown syntax - ![alt text](enter url here)

- Copy this in your markdown and you are good to go:

![Z(i,j)=X(i,k) * Y(k, j); k=1 to n](http://www.sciweavers.org/tex2img.php?eq=Z_i_j%3D%5Csum_%7Bi%3D1%7D%5E%7B10%7D%20X_i_k%20%2A%20Y_k_j&bc=White&fc=Black&im=jpg&fs=12&ff=arev&edit=)

Image below is the output of markdown. Hurray!!

While GitHub won't interpret the MathJax formulas, you can automatically generate a new Markdown document with the formulae replaced by images.

I suggest you look at the GitHub app TeXify:

GitHub App that looks in your pushes for files with extension *.tex.md and renders it's TeX expressions as SVG images

How it works (from the source repository):

Whenever you push TeXify will run and seach for *.tex.md files in your last commit. For each one of those it'll run readme2tex which will take LaTeX expressions enclosed between dollar signs, convert it to plain SVG images, and then save the output into a .md extension file (That means that a file named README.tex.md will be processed and the output will be saved as README.md). After that, the output file and the new SVG images are then commited and pushed back to your repo.

There is good solution for your problem - use TeXify github plugin (mentioned by Tom Hale answer - but I developed his answer in given link below) - more details about this github plugin and explanation why this is good approach you can find in that answer.

A "quick and dirty" solution is to maintain a standard .md file using standard TeX equations, e.g. _README.md. When you are satisfied, pass the entire file through Pandoc to convert from standard Markdown to Markdown (Github flavour), and copy the output to README.md.

You can do this online for a quick turnaround, or install/configure Pandoc locally.

I used the following in the head of mark down file

<script type="text/javascript" async
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js? 
config=TeX-MML-AM_CHTML"
</script>

Then typed the following mathjax statement
$$x_{1,2} = \frac{-b \pm \sqrt{b^2-4ac}}{2b}.$$
It worked for me

Markdown supports inline HTML. Inline HTML can be used for both quick and simple inline equations and, with and external tool, more complex rendering.

Quick and Simple Inline

For quick and simple inline items use HTML ampersand entity codes. An example that combines this idea with subscript text in markdown is: h_?(x) = ?_o x + ?₁x, the code for which follows.

    h<sub>&theta;</sub>(x) = &theta;<sub>o</sub> x + &theta;<sub>1</sub>x

HTML ampersand entity codes for common math symbols can be found here. Codes for Greek letters here.

While this approach has limitations it works in practically all markdown and does not require any external libraries.

Complex Scalable Inline Rendering with LaTeX and Codecogs

If your needs are greater use an external LaTeX renderer like CodeCogs. Create an equation with CodeCogs editor. Choose svg for rendering and HTML for the embed code. Svg renders well on resize. HTML allows LaTeX to be easily read when you are looking at the source. Copy the embed code from the bottom of the page and paste it into your markdown.

<img src="https://latex.codecogs.com/svg.latex?\Large&space;x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}" title="\Large x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}" />

Expressed in markdown becomes

![\Large x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}](https://latex.codecogs.com/svg.latex?\Large&space;x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}) 

This combines this answer and this answer.

GitHub support only somtimes worked using the above raw html syntax for readable LaTeX for me. If the above does not work for you another option is to instead choose URL Encoded rendering and use that output to manually create a link like:

![\Large x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}](https://latex.codecogs.com/svg.latex?x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D)

This manually incorporates LaTex in the alt image text and uses an encoded URL for rendering on GitHub.

Multi-line Rendering

If you need multi-line rendering check out this answer.

It ’s 2020 now, let me summarize the progress of the mathematical formula rendering support of source code repository hosts.

GitHub & Bitbucket

GitHub and Bitbucket still do not support the rendering of mathematical formulas, whether it is the default delimiters or other.

Bitbucket Cloud / BCLOUD-11192 -- Add LaTeX Support in MarkDown Documents (BB-12552)

GitHub / markup -- Rendering math equations

GitHub / markup -- Support latex

GitHub Community Forum -- [FEATURE REQUEST] LaTeX Math in Markdown

talk.commonmark.org -- Can math formula added to the markdown

GitHub has hardly made any substantial progress in recent years.

GitLab

GitLab is already supported, but not the most common way. It uses its own delimiter.

This math is inline $`a^2+b^2=c^2`$.

This is on a separate line

```math
a^2+b^2=c^2
```

GitLab Flavored Markdown -- Math

Who supports the universal delimiters?

A Markdown parser used by Hugo

Other ways to render

• Use web api to render according to A hack for showing LaTeX formulas in GitHub markdown, you can even write jupyter notebook.

• readme2tex

One other work-around is to use jupyter notebooks and use the markdown mode in cells to render equations.

Basic stuff seems to work perfectly, like centered equations

\begin{equation}
...
\end{equation}

or inline equations

$ \sum_{\forall i}{x_i^{2}} $

Although, one of the functions that I really wanted did not render at all in github was \mbox{}, which was a bummer. But, all in all this has been the most successful way of rendering equations on github.

Regarding tex?image conversion, the tool LaTeXiT produces much higher quality output. I believe it is standard in most TeX distributions but you can certainly find it online if you don't already have it. All you need to do is put it in the TeX, drag the image to your desktop, then drag from your desktop to an image hosting site (I use imgur).