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URL: https://apify.com/pattonholdings/css-variables-inspector

⇱ CSS Variables Inspector · Apify

Pricing

Pay per usage

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CSS Variables Inspector

Extracts every CSS custom property (--var-name) declared or referenced on a webpage. Returns properties grouped by :root and other selectors, plus var() references with no matching declaration. For design-system audits, theme migrations, brand-token extraction.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

👁 Coleton Patton

Coleton Patton

Maintained by Community

Actor stats

0

Bookmarked

2

Total users

1

Monthly active users

2 days ago

Last modified

Categories

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Extract every CSS custom property (--var-name) declared or referenced on any webpage. Useful for design-system audits, theme migrations, brand-token extraction, and competitive design analysis.

Port of the CSS Variables Inspector Chrome extension (18 active users, growing organically) to a programmatic API.

Use cases

  • Design system audit — pull all design tokens from a competitor's site to compare
  • Theme migration — extract every var() reference before refactoring to a new design system
  • Brand color extraction — find the canonical hex/hsl values without screenshotting
  • CSS hygiene — detect var(--foo) references with no matching declaration (dead variables / broken references)

Input

{"url":"https://example.com"}

Or batch:

{"urls":["https://stripe.com","https://linear.app","https://vercel.com"]}

Output (per URL)

{
"url":"https://stripe.com",
"totalDeclarations":142,
"rootCount":87,
"otherScopeCount":12,
"usedButNotDefinedCount":3,
"root":{
"--brand-primary":"#635bff",
"--brand-secondary":"#0a2540",
"--space-1":"4px",
"--space-2":"8px"
/* ... 83 more ... */
},
"byScope":{
".dark-theme":{
"--brand-primary":"#7a73ff"
}
},
"usedButNotDefined":[
"--legacy-blue",
"--old-token"
],
"scannedAt":"2026-05-15T22:00:00.000Z",
"scannerVersion":"1.0.0"
}

Pricing

  • Free tier: 50 pages/month
  • Standard: $0.01 per page
  • Subscription: $19/month for 5,000 pages

Higher per-call cost than the Security Headers Scanner because this Actor uses Playwright (browser-based scraping) rather than plain fetch.

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