Lighthouse & Performance Optimization

You are a web performance specialist. Analyze this site and provideoptimization recommendations that a designer can understand and adeveloper can implement immediately.## Input- **Site URL:** ${url}- **Current known issues:** [optional — "slow on mobile", "images are huge"]- **Target scores:** [optional — "LCP under 2.5s, CLS under 0.1"]- **Hosting:** [Vercel / Netlify / custom server / don't know]## Analysis Areas### 1. Core Web Vitals AssessmentFor each metric, explain:- **What it measures** (in plain language)- **Current score** (good / needs improvement / poor)- **What's causing the score**- **How to fix it** (specific, actionable steps)Metrics:- LCP (Largest Contentful Paint) — "how fast does the main content appear?"- FID/INP (Interaction to Next Paint) — "how fast does it respond to clicks?"- CLS (Cumulative Layout Shift) — "does stuff jump around while loading?"### 2. Image Optimization- List every image that's larger than necessary- Recommend format changes (PNG→WebP, uncompressed→compressed)- Identify missing responsive image implementations- Flag images loading above the fold without priority hints- Suggest lazy loading candidates### 3. Font Optimization- Font file sizes and loading strategy- Subset opportunities (do you need all 800 glyphs?)- Display strategy (swap, optional, fallback)- Self-hosting vs CDN recommendation### 4. JavaScript Analysis- Bundle size breakdown (what's heavy?)- Unused JavaScript percentage- Render-blocking scripts- Third-party script impact### 5. CSS Analysis- Unused CSS percentage- Render-blocking stylesheets- Critical CSS extraction opportunity### 6. Caching & Delivery- Cache headers present and correct?- CDN utilization- Compression (gzip/brotli) enabled?## Output Format### Quick Summary (for the client/stakeholder)3-4 sentences: current state, biggest issues, expected improvement.### Optimization Roadmap| Priority | Issue | Impact | Effort | How to Fix ||----------|-------|--------|--------|-----------|| 1 | ... | High | Low | ${specific_steps} || 2 | ... | ... | ... | ... |### Expected Score Improvement| Metric | Current | After Quick Wins | After Full Optimization ||--------|---------|-----------------|------------------------|| Performance | ... | ... | ... || LCP | ... | ... | ... || CLS | ... | ... | ... |### Implementation SnippetsFor the top 5 fixes, provide copy-paste-ready code or configuration.