Extract CSS Variables from Any Website (2026 Guide)
By The ZipIt Team
CSS variables (Custom Properties) have revolutionized how we write styling on the web. They are the backbone of modern theming, dark mode toggles, and responsive design systems.
If you want to understand how a top-tier website is styled, extracting its CSS variables is the holy grail. It reveals the exact colour palettes, spacing scales, and typography hierarchies the developers established.
Here is the definitive guide to finding, extracting, and utilizing CSS variables from any live website in 2026.
Extract Directly from the Web
No browser extension required. Just paste any URL into our web app and instantly extract design tokens, assets, and full source code.
When you extract a site's :root variables, you essentially download their entire design system configuration. It is the ultimate shortcut for competitive analysis and design inspiration.
Method 1: The DevTools Hunt
You can manually find CSS variables using the browser's developer tools.
Open Chrome DevTools (F12 or Right-Click -> Inspect).
Ensure you have the <html> or <body> element selected in the Elements panel.
Look at the Styles pane on the right.
Scroll down until you see the :root pseudo-class.
Here, you will see a massive list of variables.
The Problem with DevTools
While you can see the variables, DevTools makes it painfully difficult to extract them efficiently.
* You cannot easily copy the entire block if the variables are spread across multiple stylesheets.
* Many sites dynamically inject variables via JavaScript based on user state (like dark mode), which can be hard to track down.
* Frameworks like React and Vue often attach variables directly to inline styles on specific components, meaning they won't appear in the :root block.
Method 2: Console Scripts
If you are comfortable with JavaScript, you can write a script in the browser console to iterate through all stylesheets and extract custom properties.
// A simple script to find CSS variables
const isSameDomain = (styleSheet) => {
if (!styleSheet.href) return true;
return styleSheet.href.indexOf(window.location.origin) === 0;
};
const getCSSVariables = () => {
let cssVars = [];
for (let i = 0; i < document.styleSheets.length; i++) {
if (isSameDomain(document.styleSheets[i])) {
try {
for (let j = 0; j < document.styleSheets[i].cssRules.length; j++) {
let rule = document.styleSheets[i].cssRules[j];
if (rule.style) {
for (let k = 0; k < rule.style.length; k++) {
let name = rule.style[k];
if (name.startsWith('--')) {
cssVars.push(`${name}: ${rule.style.getPropertyValue(name)}`);
}
}
}
}
} catch (e) {}
}
}
return cssVars;
};
console.log(getCSSVariables());
This works better than manual inspection, but it fails on CORS-restricted external stylesheets and cannot easily read variables injected dynamically by modern CSS-in-JS libraries (like Styled Components or Emotion).
Method 3: Automated Token Extractors (ZipIt)
The most robust way to extract CSS variables in 2026 is using a dedicated reverse-engineering tool like ZipIt.
ZipIt bypasses CORS issues and complex CSS-in-JS shadow DOMs by reading the final computed styles rendered by the browser engine.
Launch ZipIt on the target URL.
Select Extract Design Tokens.
ZipIt will instantly output a clean, formatted block of every CSS variable active on the page, categorized by Colours, Typography, and Spacing.
"Extraction tools do the heavy lifting of parsing shadow DOMs, iframe boundaries, and dynamic JavaScript injections to give you the absolute source of truth."
Handling Dark Mode Variables
One of the greatest benefits of automated extraction is handling themes. Modern sites swap variables based on media queries:
When using ZipIt, you can extract the variables in Light mode, then toggle your system to Dark mode, and extract them again. This gives you the complete mapping of how the site handles theme inversion—something incredibly tedious to map manually.
Conclusion
CSS variables are the blueprint of modern web design. While you can hunt them down manually in DevTools or write custom JavaScript scrapers, using an automated extraction tool is by far the most efficient method. It guarantees you capture every token, including dynamically injected properties, allowing you to seamlessly integrate those design decisions into your own projects.
Stop inspecting. Start building.
Why spend hours analyzing source code when ZipIt can do it in seconds? Enhance your workflow today.
