Roier SEO - Technical SEO Auditor & Fixer

An AI-powered SEO optimization skill that audits websites and automatically implements fixes.

When to Use

User asks to "audit my site" or "check SEO"
User wants to "improve performance" or "fix SEO issues"
User mentions "lighthouse", "pagespeed", or "core web vitals"
User wants to add/fix meta tags, structured data, or accessibility
User has a local dev server and wants SEO analysis

Quick Start

1. Run an Audit

For a live website:

node ~/.claude/skills/roier-seo/scripts/audit.js https://example.com

For a local dev server (must be running):

node ~/.claude/skills/roier-seo/scripts/audit.js http://localhost:3000

2. Analyze Results

After running the audit, analyze the JSON output to identify issues and prioritize fixes.

3. Implement Fixes

Use the fix patterns in this skill to automatically implement SEO improvements in the user's codebase.

Audit Categories

The audit returns scores (0-100) for five categories:

Category	Description	Weight
Performance	Page load speed, Core Web Vitals	High
Accessibility	WCAG compliance, screen reader support	High
Best Practices	Security, modern web standards	Medium
SEO	Search engine optimization, crawlability	High
PWA	Progressive Web App compliance	Low

Technical SEO Fix Patterns

Meta Tags (HTML Head)

Missing or Bad Title Tag

<!-- Bad -->
<title>Home</title>

<!-- Good -->
<title>Primary Keyword - Secondary Keyword | Brand Name</title>

Rules:

50-60 characters max
Include primary keyword near the beginning
Unique per page
Include brand name at end

Missing or Bad Meta Description

<!-- Add to <head> -->
<meta name="description" content="Compelling description with keywords. 150-160 characters that encourages clicks from search results.">

Rules:

150-160 characters
Include primary and secondary keywords naturally
Compelling call-to-action
Unique per page

Missing Viewport Meta Tag

<meta name="viewport" content="width=device-width, initial-scale=1">

Missing Charset

<meta charset="UTF-8">

Missing Language

<html lang="en">

Open Graph Tags (Social Sharing)

<meta property="og:title" content="Page Title">
<meta property="og:description" content="Page description">
<meta property="og:image" content="https://example.com/image.jpg">
<meta property="og:url" content="https://example.com/page">
<meta property="og:type" content="website">
<meta property="og:site_name" content="Brand Name">

Twitter Card Tags

<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Page Title">
<meta name="twitter:description" content="Page description">
<meta name="twitter:image" content="https://example.com/image.jpg">

Canonical URL

<link rel="canonical" href="https://example.com/canonical-page">

Robots Meta

<!-- Allow indexing (default) -->
<meta name="robots" content="index, follow">

<!-- Prevent indexing (for staging, admin pages) -->
<meta name="robots" content="noindex, nofollow">

Structured Data (JSON-LD)

Website Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "WebSite",
  "name": "Site Name",
  "url": "https://example.com",
  "potentialAction": {
    "@type": "SearchAction",
    "target": "https://example.com/search?q={search_term_string}",
    "query-input": "required name=search_term_string"
  }
}
</script>

Organization Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Company Name",
  "url": "https://example.com",
  "logo": "https://example.com/logo.png",
  "sameAs": [
    "https://twitter.com/company",
    "https://linkedin.com/company/company"
  ]
}
</script>

BreadcrumbList Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://example.com"},
    {"@type": "ListItem", "position": 2, "name": "Category", "item": "https://example.com/category"},
    {"@type": "ListItem", "position": 3, "name": "Page"}
  ]
}
</script>

Article Schema (for blog posts)

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Article Title",
  "author": {"@type": "Person", "name": "Author Name"},
  "datePublished": "2024-01-15",
  "dateModified": "2024-01-20",
  "image": "https://example.com/article-image.jpg",
  "publisher": {
    "@type": "Organization",
    "name": "Publisher Name",
    "logo": {"@type": "ImageObject", "url": "https://example.com/logo.png"}
  }
}
</script>

Performance Optimizations

Image Optimization

Add width/height attributes (prevent CLS)

<!-- Bad -->
<img src="image.jpg" alt="Description">

<!-- Good -->
<img src="image.jpg" alt="Description" width="800" height="600">

Add lazy loading

<img src="image.jpg" alt="Description" loading="lazy">

Use modern formats (WebP/AVIF)

<picture>
  <source srcset="image.avif" type="image/avif">
  <source srcset="image.webp" type="image/webp">
  <img src="image.jpg" alt="Description">
</picture>

Font Optimization

Preload critical fonts

<link rel="preload" href="/fonts/main.woff2" as="font" type="font/woff2" crossorigin>

Use font-display: swap

@font-face {
  font-family: 'Custom Font';
  src: url('/fonts/custom.woff2') format('woff2');
  font-display: swap;
}

Resource Hints

<!-- Preconnect to critical third-party origins -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://cdn.example.com">

<!-- DNS prefetch for non-critical origins -->
<link rel="dns-prefetch" href="https://analytics.example.com">

<!-- Preload critical resources -->
<link rel="preload" href="/critical.css" as="style">
<link rel="preload" href="/hero-image.webp" as="image">

Accessibility Fixes

Missing Alt Text

<!-- Bad -->
<img src="photo.jpg">

<!-- Good (descriptive) -->
<img src="photo.jpg" alt="Team members collaborating in the office">

<!-- Good (decorative, intentionally empty) -->
<img src="decoration.jpg" alt="" role="presentation">

Insufficient Color Contrast

Ensure text has at least:

4.5:1 contrast ratio for normal text
3:1 contrast ratio for large text (18px+ or 14px+ bold)

Missing Form Labels

<!-- Bad -->
<input type="email" placeholder="Email">

<!-- Good -->
<label for="email">Email Address</label>
<input type="email" id="email" name="email">

Missing Skip Link

<!-- Add as first element in body -->
<a href="#main-content" class="skip-link">Skip to main content</a>

<!-- Style to hide visually but accessible -->
<style>
.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  left: 0;
  top: 0;
  z-index: 9999;
  background: #000;
  color: #fff;
  padding: 8px 16px;
}
</style>

Missing Landmark Roles

<header role="banner">...</header>
<nav role="navigation">...</nav>
<main role="main" id="main-content">...</main>
<footer role="contentinfo">...</footer>

Button Accessibility

<!-- Bad -->
<div onclick="submit()">Submit</div>

<!-- Good -->
<button type="submit">Submit</button>

<!-- Icon button needs aria-label -->
<button aria-label="Close menu">
  <svg>...</svg>
</button>

Best Practices Fixes

HTTPS

Ensure all resources load over HTTPS. Fix mixed content:

<!-- Bad -->
<img src="http://example.com/image.jpg">

<!-- Good -->
<img src="https://example.com/image.jpg">