SEO & Analytics Auditor Skill

SEO & Analytics Auditor

Audit SEO, verify analytics, and optimize Core Web Vitals.

When to Use

Use for:

Auditing SEO meta tags and structured data
Verifying analytics implementations (GA4, Cloudflare)
Checking Core Web Vitals (LCP, INP, CLS)
Troubleshooting Search Console issues
Validating Open Graph and Twitter Card meta tags
Reviewing robots.txt and sitemap.xml

Quick Audit Workflow

# 1. Run Lighthouse audit
npx lighthouse https://yoursite.com --output=html --output-path=./audit.html

# 2. Check Core Web Vitals
npx lighthouse https://yoursite.com --only-categories=performance

# 3. Validate structured data
# Open: https://search.google.com/test/rich-results

SEO Checklist

Meta Tags (Required)

<title>Page Title - Brand (50-60 chars)</title>
<meta name="description" content="Description (150-160 chars)" />
<meta name="robots" content="index, follow" />
<link rel="canonical" href="https://domain.com/page/" />

Open Graph (Social Sharing)

<meta property="og:type" content="website" />
<meta property="og:url" content="https://domain.com/" />
<meta property="og:title" content="Title" />
<meta property="og:description" content="Description" />
<meta property="og:image" content="https://domain.com/og-image.png" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />

Twitter Card

<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Title" />
<meta name="twitter:description" content="Description" />
<meta name="twitter:image" content="https://domain.com/og-image.png" />

Schema.org (Structured Data)

<script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "Person",
    "name": "Name",
    "jobTitle": "Title",
    "url": "https://domain.com"
  }
</script>

Analytics Implementation

Google Analytics 4

<script
  async
  src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXX"
></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag() {
    dataLayer.push(arguments);
  }
  gtag("js", new Date());
  gtag("config", "G-XXXXXXXXXX", {
    anonymize_ip: true,
    cookie_flags: "SameSite=None;Secure",
  });
</script>

Cloudflare Web Analytics

<script
  defer
  src="https://static.cloudflareinsights.com/beacon.min.js"
  data-cf-beacon='{"token": "YOUR_TOKEN"}'
></script>

Core Web Vitals Targets (2025)

| Metric | Good | Needs Improvement | Poor | | ------------------------------- | ------- | ----------------- | ------- | | LCP (Largest Contentful Paint) | < 2.5s | 2.5s - 4s | > 4s | | INP (Interaction to Next Paint) | < 200ms | 200ms - 500ms | > 500ms | | CLS (Cumulative Layout Shift) | < 0.1 | 0.1 - 0.25 | > 0.25 |

Testing Tools

| Tool | URL | Purpose | | ------------------ | ------------------------------------------- | --------------- | | PageSpeed Insights | https://pagespeed.web.dev | Core Web Vitals | | Rich Results Test | https://search.google.com/test/rich-results | Schema.org | | OpenGraph.xyz | https://www.opengraph.xyz | Social preview |

Files to Check

index.html - Meta tags, analytics scripts, Schema.org
robots.txt - Crawler directives, sitemap reference
sitemap.xml - URL list, lastmod dates
manifest.json - PWA config

Common Issues

| Issue | Fix | | -------------------------- | -------------------------------- | | Meta description too short | Use 150-160 characters | | Missing canonical URL | Add <link rel="canonical"> | | OG image wrong size | Use 1200x630 for best display | | Schema.org errors | Test with Rich Results Test | | Analytics not firing | Check browser console for errors |

Integration Checklist

[ ] Google Search Console verified
[ ] Sitemap submitted to GSC
[ ] GA4 property created and linked
[ ] Core Web Vitals in "Good" range
[ ] Rich Results test passing
[ ] Social preview working

Agent Skills: SEO & Analytics Auditor

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Skill Files