If you want to extend Pygments without hacking the sources, you can use package entry points to add new lexers, formatters, styles or filters as if they were in the Pygments core.

The idea is to create a Python package, declare how extends Pygments, and install it.

This will allow you to use your custom lexers/… with the pygmentize command. They will also be found by the lookup functions (lexers.get_lexer_by_name et al.), which makes them available to tools such as Sphinx, mkdocs, …

Defining plugins through entry points

We have created a repository with a project template for defining your own plugins. It is available at

Extending The Core

If you have written a Pygments plugin that is open source, please inform us about that. There is a high chance that we’ll add it to the Pygments distribution.