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SEO Optimization

Audits and fixes technical SEO, on-page metadata and structured data using Lighthouse SEO audits and Google Search guidelines.

Marketing & SEOIntermediate★ 2,741⑂ 249AI score 9/10Last updated: Aug 24, 2026

What it does

  • Evidence-led audit workflow: runs lighthouse_audit via Chrome DevTools MCP (or falls back to Lighthouse CLI), then inspects what Lighthouse can't see — response headers, redirects, robots.txt, sitemap coverage, canonical consistency across templates, Search Console evidence.
  • Technical SEO: robots.txt and meta robots patterns, canonicals, XML sitemaps (50k URL / 50MB limits, sitemap index), URL structure rules, HTTPS and security headers.
  • On-page SEO: titles and meta descriptions (character counts treated as lint proxies, not pass/fail), heading hierarchy, image filenames and alt text, descriptive internal anchor text.
  • Structured data: defers to references/STRUCTURED-DATA.md for Organization, Article, Product, FAQ and Breadcrumb JSON-LD plus validation links.
  • AI-era section: separates Lighthouse Agentic Browsing, search indexing, and AI citation; documents the real effect of OAI-SearchBot, PerplexityBot, Claude-SearchBot, Google-Extended, and treats llms.txt as optional and experimental.
  • Mobile & international: viewport, 48px tap targets, font sizes, hreflang, lang declaration — closing with a priority-ordered audit checklist.

Who it's for

  • Frontend/fullstack developers owning SEO for their own site, docs or blog
  • Teams cleaning up meta tags and schema on Next.js, Astro or WordPress builds
  • Technical SEO practitioners who need defensible answers about AI crawlers

Example uses

  1. "Audit SEO on our product detail pages" → runs the Lighthouse SEO audit, finds duplicate titles, missing descriptions and a wrong canonical, patches the templates and re-runs.
  2. "Add structured data to this blog post" → emits Article + Breadcrumb JSON-LD describing only visible content, then validates with the Rich Results Test.
  3. "How should we handle AI bots?" → distinguishes training crawlers (GPTBot, ClaudeBot) from search crawlers (OAI-SearchBot, Claude-SearchBot) and writes robots.txt with the consequences spelled out.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/addyosmani/web-quality-skills/HEAD/skills/seo/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/seo folder from the GitHub repo addyosmani/web-quality-skills into my ~/.claude/skills/addyosmani-seo/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/addyosmani/web-quality-skills.git /tmp/web-quality-skills && mkdir -p ~/.claude/skills && cp -r /tmp/web-quality-skills/skills/seo ~/.claude/skills/seo

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repository: git clone https://github.com/addyosmani/web-quality-skills.git
  3. Create the skills directory: mkdir -p ~/.claude/skills
  4. Copy just this skill: cp -r web-quality-skills/skills/seo ~/.claude/skills/seo
    • Copy the whole folder so references/STRUCTURED-DATA.md comes along.
  5. Optional: add the sibling skills it links to — cp -r web-quality-skills/skills/core-web-vitals web-quality-skills/skills/web-quality-audit ~/.claude/skills/
  6. Restart Claude Code and ask something like "improve SEO on this site" to trigger it.
  7. Recommended: connect Chrome DevTools MCP, or install the CLI with npm i -g lighthouse, so rendered-page audits actually run.
View source on GitHub ↗License: MIT