# Components

Located at src/components.


Pangolin.js uses Fractal for the web UI. Fractal is an incredibly powerful system for component libraries. Head over to the full documentation for Fractal (opens new window) to learn more.

A component is represented by at least one *.njk file that holds the Nunjucks/HTML code.

Additional information can be provided with a configuration and a documentation file. All files have to share the same name, e.g. button.njk, button.config.json, and button.readme.md.

File Purpose
*.njk Holds the component’s Nunjucks/HTML code.
*.config.{js,json,yml} Optional Configuration file (opens new window) for a component.
*.readme.md Optional Markdown documentation (opens new window) for a component.