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name: web-quality description: Web quality optimization skills based on Google Lighthouse guidelines and Core Web Vitals. Use when asked to audit web quality, optimize performance, improve accessibility, fix SEO, apply best practices, or analyze Core Web Vitals (LCP, INP, CLS). license: MIT metadata: author: Addy Osmani source: https://github.com/addyosmani/web-quality-skills version: "1.0"

Web Quality Skills

Comprehensive web quality optimization based on Google Lighthouse guidelines and Core Web Vitals.

Available Sub-Skills

Skill	File	Triggers
Web Quality Audit	web-quality-audit-SKILL.md	"audit", "quality review", "lighthouse"
Performance	performance-SKILL.md	"speed up", "optimize", "load time"
Core Web Vitals	core-web-vitals-SKILL.md	"LCP", "INP", "CLS", "Core Web Vitals"
Accessibility	accessibility-SKILL.md	"a11y", "WCAG", "accessible"
SEO	seo-SKILL.md	"SEO", "meta tags", "search"
Best Practices	best-practices-SKILL.md	"security", "best practices", "modern"

Key Thresholds

Core Web Vitals (Good):

• LCP: 2.5s or less
• INP: 200ms or less
• CLS: 0.1 or less

Performance Budgets:

• Total page weight: < 1.5 MB
• JavaScript: < 300 KB
• CSS: < 100 KB

Lighthouse Targets:

• Performance: 90+
• Accessibility: 100
• Best Practices: 95+
• SEO: 95+

Source

From addyosmani/web-quality-skills.