CSS Variable Helper

Paste CSS and have repeated values extracted into --custom-property declarations automatically.

Summary

Paste CSS and have repeated values extracted into --custom-property declarations automatically.

How it works

  1. Paste your CSS
  2. Click Extract Variables
  3. Review the generated :root block
  4. Copy updated CSS with var() references

Use cases

  • Refactoring CSS to use design tokens
  • Extracting a color palette from existing stylesheets
  • Preparing CSS for theming with custom properties

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu