A mighty, modern CSS linter.

Usage no npm install needed!

<script type="module">
  import stylelint from '';



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A mighty, modern linter that helps you avoid errors and enforce conventions in your styles.


It's mighty as it:

  • understands the latest CSS syntax including custom properties and level 4 selectors
  • extracts embedded styles from HTML, markdown and CSS-in-JS object & template literals
  • parses CSS-like syntaxes like SCSS, Sass, Less and SugarSS
  • has over 170 built-in rules to catch errors, apply limits and enforce stylistic conventions
  • supports plugins so you can create your own rules or make use of plugins written by the community
  • automatically fixes the majority of stylistic violations
  • is well tested with over 15000 unit tests
  • supports shareable configs that you can extend or create
  • is unopinionated so that you can customize it to your exact needs
  • has a growing community and is used by Facebook, GitHub and WordPress

Example output


Getting started

You'll find steps to get started in our User guide.


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The MIT License.