How to Get Lighthouse Score 100: Step by Step Guide

What is Lighthouse?

Lighthouse is Google's open-source tool for auditing web page quality. It scores 4 categories: Performance, Accessibility, Best Practices, and SEO — each 0-100.

Our Score: 100/96/100/100

SEO Snapshot scores **100 Performance, 96 Accessibility, 100 Best Practices, 100 SEO** on Lighthouse. Here's how we achieved it.

Performance: 100/100

Key Metrics

- **LCP** (Largest Contentful Paint): Under 2.5s

- **FID/INP** (Interaction to Next Paint): Under 200ms

- **CLS** (Cumulative Layout Shift): Under 0.1

What We Did

1. **Static generation** with Next.js — HTML served from CDN

2. **No render-blocking scripts** — all JS deferred

3. **Gzip + Brotli** compression via Cloudflare

4. **Image optimization** — SVG for icons, lazy loading

5. **Minimal JavaScript** — no heavy libraries

6. **Font-display: swap** — no invisible text flash

Quick Wins

- Add `loading="lazy"` to below-fold images

- Add `defer` to all script tags

- Enable gzip compression

- Set proper Cache-Control headers

- Use WebP images instead of JPEG/PNG

SEO: 100/100

1. Title tag with keyword

2. Meta description 120-160 chars

3. Canonical URL

4. lang attribute on html

5. robots meta index,follow

6. Structured data (JSON-LD)

7. Mobile viewport meta tag

8. Proper heading hierarchy

Best Practices: 100/100

1. HTTPS everywhere

2. No deprecated APIs

3. No console errors

4. Proper image aspect ratios

5. Charset declared

Accessibility: Getting to 96+

1. All images have alt text

2. Color contrast ratios meet WCAG

3. Form inputs have labels

4. Heading hierarchy is logical

5. Skip navigation link exists

Test Your Score

Use [SEO Snapshot](/) for a comprehensive audit that goes beyond Lighthouse — 123 checks with copy-paste fix code for every issue.