# Lighthouse

> Run Lighthouse audits and implement performance, accessibility, and SEO fixes

- Skill: `manastalukdar/lighthouse` (Agent Skill)
- Install (CLI): `npx skillmds@latest add manastalukdar/lighthouse`
- Raw SKILL.md: https://api.skillmd.com/api/skills/manastalukdar/lighthouse/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Marketing & Growth
- Author: manastalukdar (https://skillmd.com/u/manastalukdar)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/manastalukdar/lighthouse

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# Lighthouse Performance Auditing & Fixes

I'll run comprehensive Lighthouse audits for performance, accessibility, SEO, and best practices, then implement prioritized fixes automatically.

**Audit Categories:**
- Performance (Core Web Vitals: LCP, FID, CLS)
- Accessibility (WCAG compliance)
- SEO (Search engine optimization)
- Best Practices (Security, modern standards)
- PWA (Progressive Web App)

**Arguments:** `$ARGUMENTS` - optional: URL to audit (defaults to http://localhost:3000) or mobile/desktop

<think>
Lighthouse auditing requires understanding:
- Core Web Vitals (LCP, FID, CLS) impact on user experience
- Accessibility barriers and WCAG guidelines
- SEO best practices and meta tag requirements
- Performance optimization opportunities
- Progressive enhancement strategies
</think>

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## Token Optimization

**Expected range**: 300–2,800 tokens (initial), 100 tokens (good scores)

**Caching**: Caches last audit results in `.claude/cache/lighthouse/last-audit.json` for 7 days.

**Early exit**: Returns immediately if all Lighthouse scores are above the threshold.

**Patterns used**: Grep-before-Read, early exit, Bash for system queries, caching