SE

seo-optimizer

A guide to on-page SEO, technical implementation, and keyword strategies to improve website rankings.

Install

mkdir -p .claude/skills/seo-optimizer && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/650" && unzip -o skill.zip -d .claude/skills/seo-optimizer && rm skill.zip

Installs to .claude/skills/seo-optimizer

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Search Engine Optimization specialist for content strategy, technical SEO, keyword research, and ranking improvements. Use when optimizing website content, improving search rankings, conducting keyword analysis, or implementing SEO best practices. Expert in on-page SEO, meta tags, schema markup, and Core Web Vitals.
317 chars✓ has a “when” triggerlonger than Claude Code's old 250-char listing cap (fine on current versions)
Intermediate

Key capabilities

  • Perform keyword research and topic clustering
  • Optimize on-page elements like title tags and meta descriptions
  • Implement schema markup for structured data
  • Audit technical SEO including robots.txt and sitemaps
  • Improve Core Web Vitals and page speed
  • Configure mobile-first responsive settings

How it works

The skill applies a structured checklist to content and technical site elements, ensuring alignment with search engine ranking factors and performance metrics.

Inputs & outputs

You give it
URL or content draft
You get back
Optimized content structure and technical configuration

When to use seo-optimizer

  • Perform keyword research
  • Optimize meta tags for a page
  • Audit technical SEO issues
  • Improve Core Web Vitals

About this skill

SEO Optimizer

Comprehensive guidance for search engine optimization across content, technical implementation, and strategic planning to improve organic search visibility and rankings.

When to Use This Skill

Use this skill when:

  • Optimizing website content for search engines
  • Conducting keyword research and analysis
  • Implementing technical SEO improvements
  • Creating SEO-friendly meta tags and descriptions
  • Auditing websites for SEO issues
  • Improving Core Web Vitals and page speed
  • Implementing schema markup (structured data)
  • Planning content strategy for organic traffic

SEO Fundamentals

1. Keyword Research & Strategy

Primary Keyword Selection:

  • Focus on search intent (informational, navigational, transactional, commercial)
  • Balance search volume with competition
  • Consider keyword difficulty and ranking potential
  • Target long-tail keywords for quick wins

Keyword Research Process:

1. Identify seed keywords from business objectives
2. Use tools to expand keyword list (Google Keyword Planner, Ahrefs, SEMrush)
3. Analyze search volume and difficulty
4. Group keywords by topic clusters
5. Map keywords to content types and pages
6. Prioritize based on potential ROI

Content Optimization Formula:

  • Primary keyword: 1-2% density (natural placement)
  • Include in: Title tag, H1, first paragraph, URL, meta description
  • Use semantic variations and related terms
  • Maintain natural readability (don't keyword stuff)

2. On-Page SEO

Title Tag Optimization:

<!-- Good: Descriptive, includes keyword, under 60 characters -->
<title>Ultimate Guide to React Hooks - Learn useEffect & useState</title>

<!-- Bad: Too long, keyword stuffing, generic -->
<title>React Hooks Guide React Hooks Tutorial React Hooks Examples Learn React</title>

Best Practices:

  • Keep under 60 characters (displayed in SERPs)
  • Place primary keyword near the beginning
  • Include brand name if space permits
  • Make compelling and click-worthy
  • Unique for every page

Meta Description:

<!-- Good: Compelling, includes keywords, call-to-action, 150-160 chars -->
<meta name="description" content="Master React Hooks with our comprehensive guide. Learn useState, useEffect, and custom hooks with practical examples. Start building better React apps today.">

<!-- Bad: Too short, no value proposition -->
<meta name="description" content="React Hooks guide and tutorial">

Header Structure:

<!-- Proper hierarchy -->
<h1>Main Page Title (Primary Keyword)</h1>
  <h2>Section Heading (Related Keywords)</h2>
    <h3>Subsection</h3>
    <h3>Subsection</h3>
  <h2>Another Section</h2>
    <h3>Subsection</h3>

URL Structure:

✅ Good URLs:
- /blog/react-hooks-guide
- /products/running-shoes
- /learn/javascript-async-await

❌ Bad URLs:
- /blog?p=12345
- /products/cat-1/subcat-2/item-999
- /page.php?id=abc&ref=xyz

Image Optimization:

<!-- Optimized image -->
<img
  src="/images/react-hooks-diagram-800w.webp"
  alt="React Hooks lifecycle diagram showing useState and useEffect"
  width="800"
  height="600"
  loading="lazy"
/>

Best Practices:

  • Use descriptive, keyword-rich alt text
  • Compress images (WebP format preferred)
  • Specify dimensions to prevent layout shift
  • Use lazy loading for below-fold images
  • Include captions when relevant

3. Content Quality

E-E-A-T Principles (Experience, Expertise, Authoritativeness, Trust):

  • Demonstrate author expertise with credentials
  • Cite authoritative sources
  • Keep content accurate and up-to-date
  • Show real experience and original insights
  • Include author bios and bylines

Content Structure for SEO:

# Main Title (H1) - Primary Keyword

Brief introduction with primary keyword in first 100 words.

## What is [Topic]? (H2) - Answer core question

Comprehensive explanation with examples.

## Why [Topic] Matters (H2) - Value proposition

Benefits and use cases.

## How to [Action] (H2) - Practical guide

Step-by-step instructions with visuals.

## Best Practices (H2) - Advanced tips

Expert recommendations.

## Common Mistakes to Avoid (H2)

Troubleshooting and pitfalls.

## Conclusion

Summary and call-to-action.

Content Length Guidelines:

  • Blog posts: 1,500-2,500 words (comprehensive topics)
  • Product pages: 300-500 words minimum
  • Category pages: 500-1,000 words
  • Homepage: 500+ words

4. Technical SEO

Schema Markup (Structured Data):

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Complete Guide to React Hooks",
  "image": "https://example.com/images/react-hooks.jpg",
  "datePublished": "2024-01-15",
  "dateModified": "2024-02-01",
  "author": {
    "@type": "Person",
    "name": "Jane Developer"
  },
  "publisher": {
    "@type": "Organization",
    "name": "Tech Academy",
    "logo": {
      "@type": "ImageObject",
      "url": "https://example.com/logo.png"
    }
  }
}

Common Schema Types:

  • Article (blog posts)
  • Product (e-commerce)
  • FAQ (question/answer pages)
  • HowTo (tutorials and guides)
  • Organization (company info)
  • LocalBusiness (location-based businesses)
  • BreadcrumbList (navigation paths)
  • Review/AggregateRating (ratings and reviews)

Robots.txt Configuration:

User-agent: *
Disallow: /admin/
Disallow: /private/
Disallow: /api/
Allow: /api/public/

Sitemap: https://example.com/sitemap.xml

XML Sitemap Structure:

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://example.com/</loc>
    <lastmod>2024-01-15</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
  </url>
  <url>
    <loc>https://example.com/blog/react-hooks-guide</loc>
    <lastmod>2024-01-10</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
</urlset>

Canonical Tags:

<!-- Prevent duplicate content issues -->
<link rel="canonical" href="https://example.com/original-page">

<!-- Handle URL parameters -->
<link rel="canonical" href="https://example.com/products/shoes">
<!-- Even if accessed via: /products/shoes?color=red&size=10 -->

5. Core Web Vitals

Largest Contentful Paint (LCP) - Target: < 2.5s

  • Optimize images and videos
  • Use CDN for static assets
  • Minimize render-blocking resources
  • Implement lazy loading

First Input Delay (FID) - Target: < 100ms

  • Minimize JavaScript execution time
  • Break up long tasks
  • Use web workers for heavy computations
  • Defer non-critical JavaScript

Cumulative Layout Shift (CLS) - Target: < 0.1

  • Set size attributes on images and videos
  • Avoid inserting content above existing content
  • Use transform animations instead of layout-triggering properties
  • Reserve space for ads and embeds

Page Speed Optimization:

<!-- Preload critical resources -->
<link rel="preload" href="/fonts/main.woff2" as="font" crossorigin>

<!-- Defer non-critical CSS -->
<link rel="preload" href="/styles/non-critical.css" as="style" onload="this.onload=null;this.rel='stylesheet'">

<!-- Async/defer JavaScript -->
<script src="/js/analytics.js" async></script>
<script src="/js/main.js" defer></script>

6. Mobile SEO

Mobile-First Optimization:

  • Responsive design (mobile-friendly test passed)
  • Touch-friendly buttons (minimum 48x48px)
  • Readable font sizes (16px minimum)
  • Proper viewport configuration
  • Fast mobile page speed

Viewport Configuration:

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

7. Internal Linking Strategy

Best Practices:

  • Use descriptive anchor text (avoid "click here")
  • Link to relevant, contextual pages
  • Maintain logical hierarchy and flow
  • Include 3-5 internal links per 1,000 words
  • Update old content with links to new content

Example:

Learn more about [advanced React patterns](/guides/react-patterns)
or check out our [useState hook tutorial](/tutorials/usestate-guide).

SEO Content Checklist

Before Publishing:

  • Primary keyword in title tag (under 60 chars)
  • Meta description (150-160 chars, compelling)
  • H1 tag with primary keyword
  • URL slug optimized and readable
  • Images compressed with descriptive alt text
  • 3-5 internal links to relevant content
  • External links to authoritative sources
  • Content length appropriate for topic depth
  • Schema markup implemented
  • Mobile-friendly and responsive
  • Page speed optimized (< 3s load time)
  • No broken links
  • Canonical tag set correctly
  • Social sharing meta tags (Open Graph, Twitter Card)

Advanced SEO Strategies

Topic Clusters & Pillar Pages

Structure:

Pillar Page: "Complete Guide to React"
  ├── Cluster: "React Hooks Tutorial"
  ├── Cluster: "React Context API Guide"
  ├── Cluster: "React Performance Optimization"
  └── Cluster: "React Testing Best Practices"

Implementation:

  • Create comprehensive pillar content (3,000+ words)
  • Develop 8-12 cluster articles supporting the pillar
  • Link all clusters back to pillar page
  • Link pillar page to all clusters
  • Use consistent keyword themes

Featured Snippet Optimization

Question-Based Content:

## What is React?

React is a JavaScript library for building user interfaces,
developed by Facebook. It allows developers to create reusable
UI components and efficiently update the DOM through a virtual
DOM implementation.

List-Based Content:

## Top 5 React Best Practices

1. Use functional components with hooks
2. Implement proper state management
3. Optimize performance with React.memo
4. Follow component composition patterns
5. Write comprehensive tests

Table-Based Content:

FrameworkPerformanceLearning CurveEcosystem
ReactExcellentModerateExtensive
VueExcellentEasyGrowing

Content truncated.

When not to use it

  • When content lacks original insights or E-E-A-T
  • When the website requires stateful server-side rendering logic

Prerequisites

Google Search Console accessGoogle Analytics 4 setupAccess to website source code or CMS

Limitations

  • Requires manual implementation of suggested code changes
  • Cannot guarantee specific search ranking positions

How it compares

Unlike manual auditing, this skill provides a systematic formula for content optimization and technical implementation based on specific SEO fundamentals.

Compared to similar skills

seo-optimizer side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
seo-optimizer (this skill)337moNo flagsIntermediate
seo-keyword-strategist14moNo flagsBeginner
attribution-report03moNo flagsAdvanced
blog-seo-check02moNo flagsIntermediate

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