CSS Validator

Code

Parse CSS and surface syntax failures before formatting or minification.

Tool guide

How to use CSS Validator

Open the sections only when you need instructions or a quick explanation of the result.

  1. 1

    Load Data

    Check copied stylesheets, generated rules, design tokens, and component CSS with parser-backed feedback.

  2. 2

    Validate CSS

    Parse CSS and surface syntax failures before formatting or minification.

  3. 3

    Review: Formatted, Minified, Raw, Errors

    Validation confirms that the stylesheet can be parsed by the shared Prettier/PostCSS engine. It is a syntax check, not a browser compatibility audit.

  4. 4

    Copy, download, or continue

    CSS validation runs locally in the editor.

Learn more

Helpful context

Setup notes, privacy details, and examples when needed.

Validation confirms that the stylesheet can be parsed by the shared Prettier/PostCSS engine. It is a syntax check, not a browser compatibility audit.

Code

FAQ

Common questions about CSS Validator

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