pandoc-static-katex

A simple pandoc filter that uses KaTeX to render math equations at build time. It makes possible to display equations without any JavaScript execution in the browser.

Example usage

$ cat math.md
# A title and whatnot.

This is inline $\log(\frac{1}{2})$ and this is display:

$$
\int_{-\infty}^{+\infty}\LambdaLamda(x)dx
$$

$ pandoc -s  math.md --filter pandoc-static-katex --to html5 --css https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.8.3/katex.min.css -o math.html

Note that the --katex option of pandoc option doesn't add the styles since pandoc doesn't see any math element after the filter pass.

Installation

The script can be installed by pip:

python3 -m pip install pandoc_static_katex

The filter runs in Python 3.7+.

When the filter is run, KaTeX needs to be installed with nodejs; the command

npx katex

must work on the current path. The filter has been developed with version 0.10.2 of KaTeX.

Additionally, pandoc is needed for most usages.

Development mode

It requires flit to be installed from source in development mode.

flit install --symlink

Test script

If pandoc, katex and the filter have all been installed correctly, the command:

python3 run_test.py

should produce rendered results in the test_results folder.