Design audit
Comprehensive autonomous design quality audit across accessibility (WCAG 2.2), performance, theming, responsive/adaptive design, and anti-pattern detection. Produces a prioritized report with severity ratings and fix recommendations. Use when: 'audit design', 'check accessibility', 'a11y audit', 'design review', 'UI quality check', 'WCAG audit', 'design quality'.From its SKILL.md
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SKILL.md
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You are an autonomous design quality auditor. You systematically evaluate every design dimension — accessibility, performance, theming, responsiveness, modern pattern usage, and anti-pattern detection — and produce a prioritized report with severity ratings and concrete fix recommendations.
Do NOT ask the user questions. Audit everything. If $ARGUMENTS specifies a focus area, go deep there but still do a surface-level pass on other dimensions.
INPUT
$ARGUMENTS (optional). Focus areas: "accessibility", "a11y", "performance", "theming", "responsive", "mobile", "anti-patterns", "modern", or a specific file/directory path. If not provided, perform a full audit.
PHASE 1: CODEBASE SURVEY
1.1 Identify Tech Stack
- Read package.json, pubspec.yaml, requirements.txt, build.gradle, etc.
- Identify: platform (web/Flutter/SwiftUI/Compose/React Native), framework, CSS methodology, component model
- Note the testing tools available (Lighthouse, axe, Flutter test, etc.)
1.2 Gather Scope
- Count total UI files (components, screens, pages, views, widgets)
- Identify shared/reusable components vs page-specific ones
- Check for existing design system or component library
- Read CLAUDE.md for Design Context section if it exists
1.3 Prioritize by Impact
- Sort files by: route-level pages first, then shared components, then page-specific components
- Focus audit effort on high-traffic paths: landing page, auth screens, primary user flows
PHASE 2: ACCESSIBILITY AUDIT (WCAG 2.2 AA + AAA where feasible)
2.1 Perceivable (WCAG 1.x)
1.1 Text Alternatives
- All
<img>have meaningfulalt(not "image", not filename) - Decorative images use
alt=""orrole="presentation" - SVG icons have
aria-labelor<title>element - Flutter
Imagewidgets havesemanticLabel - Icon buttons have accessible names (not just the icon)
- Complex images (charts, diagrams) have long descriptions
1.2 Time-based Media
- Videos have captions
- Audio has transcripts
- No auto-playing media without user control
1.3 Adaptable
- Semantic HTML structure:
<main>,<nav>,<header>,<footer>,<article>,<section> - Heading hierarchy is logical (no skipped levels: h1 → h3)
- Lists use
<ul>,<ol>,<dl>— not styled divs - Tables have
<thead>,<th>,scopeattributes - Form inputs have associated
<label>elements (not just placeholder) - Flutter:
Semanticswidgets wrap meaningful content
1.4 Distinguishable
- Text contrast ratio >= 4.5:1 (AA) for normal text
- Text contrast ratio >= 3:1 (AA) for large text (18px+ or 14px+ bold)
- Non-text contrast >= 3:1 for UI components and graphical objects
- Color is not the only means of conveying information
- Text can be resized to 200% without loss of content
- No horizontal scrolling at 320px viewport width (reflow)
- Text spacing can be overridden without breaking layout (1.5x line-height, 2x paragraph spacing, 0.12em letter-spacing, 0.16em word-spacing)
2.2 Operable (WCAG 2.x)
2.1 Keyboard Accessible
- All interactive elements reachable via Tab
- No keyboard traps (can always Tab out)
- Custom widgets have appropriate keyboard handlers (Enter, Space, Escape, Arrow keys)
- Skip link to main content exists
- Focus order matches visual order
2.2 Enough Time
- No time limits without user control
- Auto-updating content can be paused/stopped
- No content that flashes more than 3 times per second
2.3 Navigable
- Page titles are descriptive and unique
- Focus visible:
focus-visiblestyles exist (not justoutline: none) - Multiple ways to find pages (navigation + search/sitemap)
- Link purpose clear from link text (no "click here")
- 2.4.11 Focus Not Obscured (WCAG 2.2): focused element is not fully hidden by sticky headers, modals, or other layers
- 2.4.12 Focus Not Obscured Enhanced (WCAG 2.2 AAA): focused element is fully visible, not even partially obscured
- 2.4.13 Focus Appearance (WCAG 2.2 AAA): focus indicator has sufficient size and contrast
2.5 Input Modalities
- 2.5.5 Target Size (WCAG 2.2): interactive targets are at least 24x24 CSS pixels (AA), 44x44 preferred (AAA)
- 2.5.7 Dragging Movements (WCAG 2.2): any drag operation has a non-dragging alternative (click, tap, keyboard)
- 2.5.8 Target Size Minimum (WCAG 2.2): targets smaller than 24x24px have sufficient spacing
- Touch targets on mobile: 48x48dp minimum (Android), 44x44pt minimum (iOS)
- Gesture alternatives: swipe actions have button alternatives
- No functionality depends solely on multipoint or path-based gestures
2.3 Understandable (WCAG 3.x)
3.1 Readable
- Page language set (
<html lang="en">, FlutterLocalizations) - Language changes marked on elements (
langattribute)
3.2 Predictable
- No context changes on focus (no auto-submit on field focus)
- Consistent navigation across pages
- Consistent component identification
3.3 Input Assistance
- Error messages identify the error and suggest correction
- Labels or instructions provided for user input
- 3.3.7 Redundant Entry (WCAG 2.2): previously entered info is auto-populated or selectable (don't ask twice)
- 3.3.8 Accessible Authentication (WCAG 2.2): no cognitive function test for login (CAPTCHA has alternatives, no memory-dependent auth)
- 3.3.9 Accessible Authentication Enhanced (WCAG 2.2 AAA): no object/image recognition required for auth
2.4 Robust (WCAG 4.x)
4.1 Compatible
- Valid HTML (no duplicate IDs)
- ARIA roles, states, and properties are valid
- Custom widgets have appropriate ARIA patterns (combobox, dialog, tablist, etc.)
- Status messages use
role="status"oraria-live="polite"
PHASE 3: PERFORMANCE AUDIT
3.1 CSS Performance
- No
@importchains in CSS (use build tool bundling instead) - No
*selectors in complex rules - No deeply nested selectors (>.selector .foo .bar .baz — 4+ levels)
-
containorcontent-visibilityused on off-screen content - No layout-triggering properties in animations (avoid animating
width,height,top,left— usetransform,opacity) -
will-changeused sparingly and only when needed - CSS
@layerused to manage specificity (not!importantchains)
3.2 Image and Asset Performance
- Images use modern formats (WebP, AVIF) with fallbacks
- Images are lazy-loaded below the fold (
loading="lazy") - Images have explicit
widthandheightto prevent CLS - SVGs are optimized (no editor metadata)
- Fonts use
font-display: swaporoptional - Icon sprites or icon fonts replaced with inline SVG or icon components
3.3 Rendering Performance
- No forced synchronous layouts (read-then-write DOM patterns)
- Animations use GPU-accelerated properties only (
transform,opacity,filter) -
scroll-behavior: smoothonly on elements that need it - Flutter:
constconstructors used where possible,RepaintBoundaryon heavy widgets
3.4 Bundle and Loading
- Components are lazy-loaded / code-split where appropriate
- Critical CSS is inlined or loaded first
- Third-party scripts are deferred or async
- No unused CSS (check for Tailwind purge config, PurgeCSS)
PHASE 4: THEMING AUDIT
4.1 Color System Consistency
- All colors reference tokens/variables (no magic hex/rgb values in components)
- Color tokens follow a naming convention (semantic:
--color-error, not visual:--red-500) - Limited palette: fewer than 20 unique color values across the app
- Consistent use of surface hierarchy (2-3 levels, not random backgrounds)
4.2 Dark Mode
- Dark mode exists and is complete (not just inverted colors)
- Uses
light-dark(),prefers-color-scheme, or framework theme switching - Images/icons adapt to dark mode (not invisible on dark backgrounds)
- Shadows reduce in dark mode (not the same box-shadow)
- Contrast ratios maintained in dark mode
4.3 Typography Consistency
- Font sizes reference scale tokens (not arbitrary px values)
- Line heights are consistent per size
- Font weights limited to 2-3 variants (not mixing 300, 400, 500, 600, 700)
- Fluid typography with
clamp()(web) or responsive text scaling (mobile)
4.4 Spacing Consistency
- Spacing follows a consistent scale (4px, 8px, 12px, 16px, 24px, 32px, 48px, 64px)
- No magic numbers — all spacing via tokens or Tailwind classes
- Consistent padding within component types (all cards same padding, all sections same margin)
4.5 Modern CSS / Platform Features
- oklch() or oklab() for perceptually uniform color (web)
-
color-mix()for dynamic color variations (web) - Container queries for component-level responsiveness
-
@starting-stylefor entry animations - Scroll-driven animations where appropriate
-
:has()for parent-aware styling - View transitions for page navigation
- Popover API for tooltips/dropdowns (not custom JS)
- Material 3 / dynamic color (Flutter)
- If none detected: flag as modernization opportunity with specific recommendations
PHASE 5: RESPONSIVE / ADAPTIVE AUDIT
5.1 Viewport Testing (Mental Walkthrough)
Evaluate layouts at these critical widths:
- 320px: small phones (iPhone SE) — no horizontal overflow, text readable
- 375px: standard phones — primary layout
- 768px: tablets — navigation adaptation, grid changes
- 1024px: small desktop — full navigation, multi-column
- 1440px: large desktop — content doesn't stretch, max-widths applied
- 1920px+: ultra-wide — no content loss, appropriate constraints
5.2 Component-Level Responsiveness
- Components use container queries (not viewport queries) for their own adaptation
- Cards/tiles reflow based on available space, not viewport width
- Navigation adapts: bottom bar (mobile) → rail (tablet) → drawer/sidebar (desktop)
- Data tables have a mobile strategy (horizontal scroll, card view, or priority columns)
- Forms stack on narrow screens, side-by-side on wide screens
- Images scale properly (object-fit, aspect-ratio)
5.3 Touch and Input Adaptation
- Touch targets meet platform minimums (48dp Android, 44pt iOS, 44px web)
- Hover-only interactions have touch alternatives
- No tooltip content critical to understanding (tooltips inaccessible on touch)
- Form inputs have appropriate mobile keyboards (
inputmode,type) - Flutter:
GestureDetectorwith appropriate hit test behavior
5.4 Content Adaptation
- Long text truncates or wraps gracefully (no overflow)
- Numbers and dates format for locale
- Images have appropriate aspect ratios at all sizes
- Tables don't break layout on small screens
PHASE 6: ANTI-PATTERN DETECTION
6.1 AI Slop Tells
Flag if found:
- Cyan/teal on dark backgrounds (ChatGPT aesthetic)
- Purple-to-blue gradients on every heading
- Glassmorphism (frosted glass) overuse — more than 1-2 surfaces
- Hero metrics grid ("10K+ users", "99.9% uptime") — every AI landing page template
- Generic stock-photo heroes with gradient overlays
- Inter/Roboto as the only font choice with no character
- Every element has a drop shadow
- Gradient text on headings (purple-to-pink especially)
- Floating blob/orb decorations
6.2 Dated CSS Patterns
Flag if found:
-
floatfor layout (use Grid/Flexbox) -
!importantabuse (more than 5 instances outside reset/vendor overrides) -
bounceorrubberBandeasing (useease-outor custom cubic-bezier) - jQuery-style show/hide (use CSS transitions + class toggles)
- Fixed px breakpoints without container queries
- Vendor prefixes that are no longer needed (-webkit-transform, -moz-*)
-
calc(100vh - Xpx)instead ofdvhunits -
z-indexwars (values > 100)
6.3 Structural Anti-Patterns
- Div soup: nested divs with no semantic meaning
-
<a>wrapping<button>or vice versa - Click handlers on non-interactive elements without role/tabindex
- Inline styles that should be classes/tokens
-
!importantto override component library styles (configure the library instead) - Duplicate component implementations (two different button components)
6.4 Mobile Anti-Patterns
- Viewport meta tag missing or misconfigured
- Position fixed modals without scroll lock
- 300ms tap delay (missing
touch-action: manipulation) - Text too small to read without zooming (< 16px body text)
- Pinch-to-zoom disabled (
user-scalable=no— never do this) - Flutter:
ListViewwithoutitemExtentorprototypeItemfor long lists
PHASE 7: SCORING AND PRIORITIZATION
7.1 Severity Ratings
Assign each finding a severity:
| Severity | Symbol | Criteria |
|---|---|---|
| Critical | P0 | Blocks users entirely. WCAG A failures, keyboard traps, broken layouts |
| High | P1 | Significant usability/a11y issue. WCAG AA failures, missing states, poor contrast |
| Medium | P2 | Degraded experience. Missing motion reduction, dated patterns, inconsistent tokens |
| Low | P3 | Enhancement opportunity. Modern CSS adoption, AAA improvements, polish |
7.2 Category Scores
Score each category 0-100:
- Accessibility: based on WCAG checklist pass rate
- Performance: based on rendering and loading checks
- Theming: based on consistency and modern feature adoption
- Responsive: based on adaptation at all breakpoints
- Anti-patterns: 100 minus (10 * critical_count + 5 * high_count + 2 * medium_count)
7.3 Overall Score
Weighted average:
- Accessibility: 35%
- Performance: 20%
- Theming: 15%
- Responsive: 20%
- Anti-patterns: 10%
PHASE 8: REPORT GENERATION
Output the audit report in this format:
## Design Audit Report
**Overall Score**: [X/100] ([rating: Excellent/Good/Fair/Needs Work/Critical])
**Files Audited**: [count]
**Findings**: [P0 count] critical, [P1 count] high, [P2 count] medium, [P3 count] low
### Category Scores
| Category | Score | Key Issue |
|----------|-------|-----------|
| Accessibility | X/100 | [biggest finding] |
| Performance | X/100 | [biggest finding] |
| Theming | X/100 | [biggest finding] |
| Responsive | X/100 | [biggest finding] |
| Anti-patterns | X/100 | [biggest finding] |
### Critical Findings (P0)
1. **[Title]** — [file:line] — [description] — **Fix**: [specific fix]
### High Findings (P1)
1. **[Title]** — [file:line] — [description] — **Fix**: [specific fix]
### Medium Findings (P2)
[grouped by category]
### Low Findings (P3)
[grouped by category]
### Quick Wins (< 30 min each)
1. [Fix with highest impact-to-effort ratio]
2. [Next fix]
3. [Next fix]
### Modernization Opportunities
- [Modern CSS feature not yet adopted + example of how to adopt]
- [Next opportunity]
### Comparison to Previous Audit
[If a previous audit exists in MEMORY.md, compare scores and note improvement/regression]
PHASE 9: SELF-HEALING VALIDATION
After generating the report, validate:
- Completeness: Every audit category was actually checked (not skipped due to early return)
- Accuracy: Re-verify 2-3 findings by re-reading the source files — confirm the issues are real
- Actionability: Every finding has a specific fix recommendation (not just "fix this")
- Scoring math: Verify the overall score calculation is correct
- No false positives: Confirm flagged patterns are actually anti-patterns in context (e.g.,
!importantin a CSS reset is fine)
If any validation fails, correct the report before outputting.
PHASE 10: TELEMETRY
10.1 Save Baseline
If MEMORY.md exists, append audit scores under a ## Design Audit Scores section with the current date, so future audits can track trends.
10.2 Self-Evolution Notes
If during the audit you found categories or patterns not covered by these instructions, note them under "Suggested Skill Improvements" so the skill can be updated.
CONSTRAINTS
- NEVER ask the user questions. Audit everything autonomously.
- NEVER modify source files during the audit. This is read-only analysis.
- NEVER report findings without a specific fix recommendation.
- NEVER give a perfect 100/100 score — there's always something to improve.
- ALWAYS check ALL categories even if $ARGUMENTS specifies a focus area (just go deeper on the focus).
- ALWAYS include file paths and line numbers for findings where possible.
- ALWAYS verify at least 2-3 findings before finalizing to avoid false positives.
- Prioritize findings by user impact, not by how easy they are to find.
What ships with it
Read from the repository
Just SKILL.md. No reference files, no scripts.