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Enter any URL. Get real Lighthouse scores for Performance, Accessibility, SEO, and Best Practices — plus Core Web Vitals (LCP, INP, CLS, FCP, TTFB). Powered by Google PageSpeed Insights. No AI, pure data.

Paste a foreground and background color. Instantly see pass/fail for WCAG 2.1 AA and AAA — for text, large text, and UI components. No AI needed.

Build multi-layer CSS box-shadows visually. Copy production-ready CSS or Tailwind config. Dark and light mode aware — no AI, no dependencies.

Enter a base size and ratio. Get a complete modular type scale with CSS custom properties, Tailwind classes, and preview. Pure math, zero AI.

Generate 5-color brand palettes from a seed. Every pairing is contrast-checked. Export as Tailwind, CSS vars, or Figma tokens.

Drop a URL or screenshot. Get a score across 5 metrics, prioritized findings with severity, and concrete fixes — benchmarked against 2,000 real pages.

Paste any product copy. Get Flesch-Kincaid, Gunning Fog, and SMOG readability scores. Know if your landing page copy lands at the right reading level.

Buttons, errors, empty states, tooltips, onboarding. Describe your UI context and get 3 conversion-optimized copy variants with rationale.

Select from pre-curated personas — by age, geography, role, and device type. Each AI agent reasons through your product as that specific user, delivering a structured usability report without scheduling a single session.

Define a base unit and scale factor. Get a complete spacing system exported as CSS tokens, Tailwind, or Figma-ready values. Pure math, zero AI.