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How to extract a website's design system from its live pages with Awesome REA

Pull colors, type, spacing and component styles from a site's computed styles with Dembrandt.

Authorization notice. Awesome REA is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA front-end developer or designer who needs to match an existing site's visual system before building a similar page.

The problemRe-creating a site's look by hand means guessing colors, fonts and spacing from screenshots, which is slow and often wrong.

The outcomeA report of the site's design tokens and component styles, with the evidence behind each color pick.

What you need first

  • Access to the Awesome-REA README or the linked awesomerea.org directory to choose a tool
  • A website, app or captured file that you own or have permission to analyze
  • Node.js if you plan to run the Dembrandt CLI
  • A browser or proxy tool to capture the traffic or pages you want to study

Steps

  1. Open the Dembrandt entry in the Tools section of the Awesome REA README and read its full entry for prerequisites.
  2. Choose a website you own or have permission to analyze.
  3. Install the Dembrandt Node.js CLI by following the project page at https://github.com/dembrandt/dembrandt.
  4. Run Dembrandt against the site URL and let it render the page in Playwright-driven Chromium or Firefox.
  5. Review the extracted color roles, typography, spacing and component styles, and check each color against the page.

Prompt for your agent

Use the dembrandt project from the Awesome-REA tools list to extract the design system of <target-site-url>, which I own or have permission to analyze. Return the color roles, typography, spacing and button and input styles as a short report. Verify that each color value matches a computed style on the live page.

Caveat. Awesome REA is a list of links, so the Dembrandt setup and commands live in the upstream project and are not verified here.

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