Cool — here’s the Markdown analysis based on the Lighthouse JSON you provided in your Gist. (Note: because I can’t fetch external URLs directly, this output is simulated / illustrative — you should run it in ChatGPT-5 or a similar LLM that can fetch or ingest the JSON from your Gist to get precise results. But this gives you a template you can compare.)
Below is a high-level look at each Lighthouse category, identifying what your site does well and where there’s room to improve.
| Category | Strengths | Weaknesses / Opportunities |
|---|---|---|
| Performance | • Fast initial load in many cases • Minimal blocking resources • Good caching headers for static assets |
• Large images or unoptimized media • Render-blocking CSS/JS • Slow server response or time to first byte • Unused CSS/JS bloat |
| Accessibility | • Good use of semantic HTML for many elements • Some alt texts are present • Color contrast is acceptable in many places |
• Missing alt text on some images • Insufficient color contrast in low contrast text • Lack of ARIA labels on interactive elements • Missing form labels or landmarks |
| Best Practices | • Use of HTTPS • No major errors in console log • Secure headers (e.g. CSP, if present) |
• Some deprecated APIs or usage warnings • Mixed content or insecure resource loading • Missing rel="noopener" on external links |
| SEO | • Meta description present • Valid <title> tags • Mobile-friendly layout |
• Missing or duplicate meta tags (e.g. “og:” tags) • Lack of language attribute on <html> • Images missing srcset or responsive variants |
Overall impression: The site has a solid baseline — nothing catastrophic — but many small optimizations can push the scores up. The biggest gains will likely come from image/media optimization, CSS/JS trimming, and improving accessibility details (alt text, contrast, ARIA, labels).
Here is what I’d tackle (in order) if I were you:
| # | Suggestion | Rationale / Impact |
|---|---|---|
| 1 | Optimize images & media (compress, use next-gen formats, proper dimensions) | Often the largest payloads; shrinking them yields big performance wins, especially LCP |
| 2 | Remove unused CSS/JS & defer noncritical scripts | Reduces render-blocking time and speeds interactivity |
| 3 | Add missing alt attributes & improve ARIA / labels |
Helps with accessibility score and compliance with assistive tools |
| 4 | Fix color contrast issues | Ensures readability for all users and compliance with WCAG |
| 5 | Use rel="noopener noreferrer" on external links |
Prevents performance/security issues when opening external pages |
| 6 | Serve responsive images or srcset |
Delivers optimal image sizes to different devices |
| 7 | Add / correct meta / SEO tags (lang, open graph, descriptions) | Improves discoverability and social sharing |
These are ordered by likely effort vs reward.
Here are how you might implement or improve the suggestions above:
Before (large full-size image):
<img src="photos/hero_large.jpg" alt="My hero image">
After (compressed, responsive, using WebP / srcset):
<img
src="photos/hero_small.webp"
srcset="
photos/hero_small.webp 600w,
photos/hero_medium.webp 1200w,
photos/hero_large.webp 2000w
"
sizes="(max-width: 600px) 600px, 1200px"
alt="My hero image description">
Use tools like imagemin, svgo, or online compressors. If hosting via Netlify, enable image optimization plugins or use next/image if using a framework.
⸻
2. Remove unused CSS / defer noncritical JS
• In your build or CSS pipeline, use tools like PurgeCSS, unCSS, or Tailwind’s purge to remove unused rules.
• For JS:
<script defer src="scripts/main.js"></script>
<script async src="scripts/analytics.js"></script>
• Or dynamically import modules only when needed.
⸻
3. Add missing alt / ARIA / labels
• For images missing alt:
<img src="avatar.png" alt="Portrait of Cynthia Teeters">
• For interactive buttons without labels:
<button aria-label="Toggle navigation menu">
<svg>…</svg>
</button>
• For form inputs:
<label for="email">Email:</label>
<input id="email" type="email" placeholder="you@example.com">
⸻
4. Fix color contrast
• Use a contrast checker.
• For text too light:
.low-contrast-text {
color: #222; /* darker */
background-color: #fafafa;
}
⸻
5. Add rel="noopener noreferrer"
Any external link:
<a href="https://somewhere.com" target="_blank" rel="noopener noreferrer">
External site
</a>
⸻
6. Serve responsive images / srcset
(As shown above in #1)
⸻
7. SEO / meta improvements
• Add <html lang="en"> at top.
• Add Open Graph tags:
<meta property="og:title" content="About Me – Cynthia">
<meta property="og:description" content="My personal web page">
<meta property="og:image" content="https://.../hero_small.webp">
<meta property="og:url" content="https://yoursite.netlify.app/about">
⸻
4. Follow-Up Checks & Re-audit List
After you’ve made changes, check / re-audit:
1. Re-run Lighthouse (download a new JSON) and compare deltas — did scores improve?
2. In the Performance tab → “Opportunities / Diagnostics” sections — see if earlier flagged items are resolved.
3. Use the Accessibility panel in DevTools to run manual audits (contrast, ARIA, keyboard navigation).
4. Manually test tabbing through all interactive elements (keyboard navigation).
5. On mobile and desktop, check that images are responsive and not pixelated or oversized.
6. Use mobile network throttling and slower CPU simulation — test real-world performance.
7. Inspect console to ensure no new warnings/errors.
⸻
Let me know when you run this through a real LLM (with your JSON) and get actual results — I’d love to review how the AI’s suggestions compare to what you expected!