seo-optimizer · secondsky — Claude Code skill: SEO audit for content

---
name: seo-optimizer
description: SEO optimization with keyword analysis, readability assessment, technical validation, content quality. Use for search rankings, blog posts, content audits, or encountering keyword density, readability scores, meta tags, schema markup errors.
license: MIT
---

# SEO Optimizer

## Overview

Perform comprehensive SEO analysis and optimization covering keyword placement, readability metrics, technical elements, and content quality to improve search engine rankings and user experience.

## When to Use

- Optimizing blog posts or articles for search rankings
- Conducting content audits
- Improving existing content performance
- Planning new content with SEO in mind
- Analyzing competitor content strategies
- Preparing content for publication

## Core Analysis Areas

### 1. Target Keywords Analysis

- Identify primary and secondary keywords
- Check placement in title, H1, first 100 words, subheadings
- Calculate keyword density (target: 1-2%)
- Identify LSI keywords and semantic variations
- Flag keyword stuffing issues

### 2. Content Structure

- Verify heading hierarchy (H1 → H2 → H3)
- Check keyword usage in headings
- Evaluate paragraph length (target: <150 words)
- Assess overall scannability
- Review content organization

### 3. Readability Metrics

```javascript
// Readability scoring example
const readabilityMetrics = {
  fleschScore: 65,           // Target: 60-70
  gradeLevel: 8,             // Target: 7-9
  avgSentenceLength: 18,     // Target: <20 words
  passiveVoice: 5,           // Target: <10%
  transitionWords: 30        // Target: >30%
};
```

**Key Metrics:**
- Flesch Reading Ease score (60-70 ideal)
- Grade level estimation
- Average sentence length (<20 words)
- Passive voice percentage (minimize)
- Transition word usage

### 4. Technical SEO Elements

| Element | Recommendation |
|---------|----------------|
| Meta Title | 50-60 characters with primary keyword |
| Meta Description | 150-160 characters, compelling with keyword |
| URL Slug | Short, keyword-rich, hyphen-separated |
| Image Alt Text | Descriptive with natural keyword usage |
| Internal Links | Link to related content with keyword anchors |
| External Links | Quality outbound links to authoritative sources |

### 5. Content Quality Assessment

- Word count adequacy (1500+ for competitive topics)
- Content depth and topic coverage
- Unique value proposition
- E-A-T signals (Expertise, Authority, Trustworthiness)
- Content freshness (current examples, recent data)
- Clear answer to user intent

### 6. Provide Actionable Recommendations

Organize findings into prioritized action items based on impact and implementation effort.

## Priority Levels

### Critical (Fix Immediately) 🚨
- Missing or poor meta description
- No keyword in title or H1
- Broken internal links
- Keyword density too high (stuffing) or too low

### High Priority ⚠️
- Poor readability score
- Weak heading structure
- Missing alt text on images
- Content too thin for topic

### Medium Priority 📋
- Could add related keywords
- Featured snippet opportunities
- Additional internal linking
- Schema markup opportunities

## Analysis Report Structure

```markdown
# SEO Analysis Report

## Overall Score: X/100

### Quick Wins 🚀
1. [Specific action with exact change]
2. [Specific action with exact change]

## Keyword Analysis
- Primary keyword density
- Placement verification
- LSI keyword coverage

## Readability Metrics
- Flesch Reading Ease: XX/100
- Grade Level: X
- Sentence length assessment

## Technical SEO
- Meta tags analysis
- URL optimization
- Image optimization

## Content Gaps
- Missing subtopics
- Coverage recommendations
- Topic expansion opportunities

## Competitor Insights
- Top ranking pages analysis
- Word count comparison
- Unique angles they cover
- Our competitive advantage

## Implementation Checklist
- [ ] Action item 1
- [ ] Action item 2

## Estimated Impact
- **Time to Implement**: X hours
- **Expected Improvement**: [Moderate/Significant] ranking boost
- **Priority**: [High/Medium/Low]
- **Timeframe**: [Weeks until results]
```

## Best Practices

- **User experience first**: Prioritize readability and value over keyword density
- **Write for humans**: Optimize for search engines second
- **Be specific**: Provide exact changes, not vague suggestions
- **Consider intent**: Match content to search intent (informational, commercial, transactional)
- **E-A-T signals**: Include author credentials, sources, and expertise indicators
- **Featured snippets**: Format content for definition boxes, lists, tables
- **Schema markup**: Suggest structured data (FAQ, How-To, Review) where relevant

## Example Analysis Flow

1. **Identify keywords** → Extract from user input or content
2. **Check placement** → Verify in title, H1, first 100 words
3. **Calculate density** → Ensure 1-2% keyword density
4. **Assess readability** → Calculate Flesch score and sentence length
5. **Review structure** → Check heading hierarchy and paragraph length
6. **Analyze technical** → Validate meta tags, URLs, alt text
7. **Find gaps** → Identify missing topics and internal links
8. **Prioritize fixes** → Sort by impact (critical > high > medium)
9. **Generate checklist** → Create actionable implementation steps

## Output Guidelines

- Provide **specific recommendations** with exact text changes
- Show **before/after examples** for clarity
- Include **keyword variations** naturally in suggestions
- Estimate **time to implement** and **expected impact**
- Format for **easy scanning** with headings and lists
- Add **context** explaining why changes matter

## Additional Resources

See [references/analysis-framework.md](references/analysis-framework.md) for:
- Detailed analysis instructions for each area
- Technical specifications and formulas
- Competitor analysis guidelines
- E-A-T evaluation criteria

See [references/output-templates.md](references/output-templates.md) for:
- Complete SEO report template
- Implementation checklist format
- Example workflow with sample content
- Featured snippet optimization templates

## Core Philosophy

> "SEO is about creating valuable, well-optimized content that serves user intent better than competitors."

Focus on genuine value creation, not manipulation tactics. Quality content that helps users naturally attracts engagement signals that improve rankings.