Performance Optimization
Skill Verified ActiveDiagnose and fix web performance issues including Core Web Vitals (LCP, INP, CLS), bundle size, asset optimization, render performance, and runtime efficiency. Use this skill whenever the user wants to improve page speed, fix Core Web Vitals, optimize assets, reduce bundle size, debug slow renders, or systematically improve a site's performance. Triggers on performance, page speed, Core Web Vitals, LCP, INP, CLS, FID, TTFB, bundle size, code splitting, image optimization, lazy loading, render blocking, slow page, performance audit, Lighthouse score. Also triggers when traffic or conversion is dropping due to perceived slowness.
To help users improve their website's speed and performance by diagnosing issues and providing actionable fixes for metrics like Core Web Vitals, asset optimization, and bundle size.
Features
- Diagnose Core Web Vitals (LCP, INP, CLS)
- Optimize JavaScript bundle size and assets
- Improve render performance and runtime efficiency
- Provide actionable remediation plans based on audit findings
- Systematic performance improvement framework
Use Cases
- Fixing Core Web Vitals (LCP, INP, CLS)
- Diagnosing slow page loads
- Reducing JavaScript bundle size
- Optimizing images, fonts, and other assets
- Pre-launch performance verification
Non-Goals
- General QA after deploys (use qa-testing)
- Technical SEO including indexing and crawling (use seo-technical)
- Code review for general bugs (use code-review-web)
Installation
npx skills add rampstackco/claude-skillsRuns the Vercel skills CLI (skills.sh) via npx — needs Node.js locally and at least one installed skills-compatible agent (Claude Code, Cursor, Codex, …). Assumes the repo follows the agentskills.io format.
Quality Score
VerifiedTrust Signals
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