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seo-audit

SEOaudittechnical SEOon-page SEOwebsite optimizationsearch engine rankingdigital marketingorganic traffic
33.6k📄 MIT🕒 2026-06-15Source ↗

Install this skill

npx skills add coreyhaines31/marketingskills

Works across Claude Code, Cursor, Codex, Copilot & Antigravity

The seo-audit skill provides a structured framework for diagnosing search engine visibility issues. It acts as a diagnostic checklist for developers and marketers to evaluate technical, on-page, and structural integrity of a website. Rather than offering broad optimization advice, this tool focuses on identifying specific bottlenecks—such as crawl errors, indexation gaps, suboptimal heading hierarchies, and site speed deficiencies—that prevent organic ranking growth. By systematically reviewing robots.txt files, sitemap validity, canonical configurations, and internal link logic, the skill highlights actionable fixes. It enforces best practices for metadata, image asset optimization, and Core Web Vitals to ensure sites adhere to current search engine standards. This process results in a prioritized list of corrections aimed at improving site discoverability and meeting user search intent.

When to Use This Skill

  • Assessing a new site build for deployment readiness
  • Investigating a sudden drop in organic search traffic
  • Identifying technical barriers for a site struggling to get pages indexed
  • Optimizing content hierarchy for high-priority landing pages

How to Invoke This Skill

Example prompts that trigger this skill in Claude Code, Cursor, or Antigravity:

  • Run an SEO audit on my current site
  • Why is my site not showing up in search results?
  • Check for technical SEO errors on this URL
  • Identify on-page optimization issues for this page
  • Review my sitemap and crawlability status

Pro Tips

  • 💡Always provide the agent with as much context as possible, including site type, business goals, and access to any relevant data (e.g., Search Console insights) for more precise recommendations.
  • 💡Clearly define the scope of the audit (e.g., 'focus on crawlability issues only' or 'audit blog posts published in the last quarter') to get targeted results.
  • 💡Prioritize the AI's recommendations by potential impact and ease of implementation, starting with critical technical fixes before moving to on-page refinements.

What this skill does

  • Analyzes technical crawlability including robots.txt and XML sitemap integrity
  • Validates canonical tag consistency to prevent duplicate content issues
  • Audits on-page elements like title tags, meta descriptions, and H1-H3 hierarchy
  • Evaluates Core Web Vitals and general speed performance factors
  • Detects orphan pages and reviews internal linking structures

When not to use it

  • Performing off-page backlink profile building or link acquisition strategy
  • Drafting new marketing content or copywriting
  • Running automated malware or deep cybersecurity vulnerability scans

Example workflow

  1. Define site goals and identify priority pages for the audit
  2. Inspect robots.txt and XML sitemap for accessibility and format errors
  3. Run performance checks to identify speed or Core Web Vitals bottlenecks
  4. Analyze page-level metadata and heading structures for alignment with target keywords
  5. Review internal link paths to identify orphan pages and deep-buried content
  6. Compile a ranked list of fixes based on potential impact to search visibility

Prerequisites

  • Access to Google Search Console or Analytics data
  • Publicly accessible website URL

Pitfalls & limitations

  • !Results are limited by the depth of crawl allowed by existing site security
  • !Does not account for external ranking factors like domain authority or competitor backlink volume
  • !Cannot fix issues requiring server-side access without specific configuration details

FAQ

Does this tool perform live ranking checks?
No, this skill focuses on technical and on-page auditing to ensure your site is built to rank, rather than tracking live keyword positions.
Can it fix my SEO issues automatically?
It provides a diagnostic report and recommendations. You must implement the suggested changes within your site's codebase or CMS.
How does this handle large-scale sites?
It approaches large sites by focusing on architecture and crawl budget management rather than manually checking every individual page.

How it compares

Unlike a generic prompt that might return surface-level advice, this skill enforces a methodical technical audit structure that mimics professional SEO diagnostic software.

Source & trust

34k stars📄 MIT🕒 Updated 2026-06-15
📄 Full skill instructions — original source: coreyhaines31/marketingskills
# SEO Audit

You are an expert in search engine optimization. Your goal is to identify SEO issues and provide actionable recommendations to improve organic search performance.

## Initial Assessment

Before auditing, understand:

1. **Site Context**
- What type of site? (SaaS, e-commerce, blog, etc.)
- What's the primary business goal for SEO?
- What keywords/topics are priorities?

2. **Current State**
- Any known issues or concerns?
- Current organic traffic level?
- Recent changes or migrations?

3. **Scope**
- Full site audit or specific pages?
- Technical + on-page, or one focus area?
- Access to Search Console / analytics?

---

## Audit Framework

### Priority Order
1. **Crawlability & Indexation** (can Google find and index it?)
2. **Technical Foundations** (is the site fast and functional?)
3. **On-Page Optimization** (is content optimized?)
4. **Content Quality** (does it deserve to rank?)
5. **Authority & Links** (does it have credibility?)

---

## Technical SEO Audit

### Crawlability

**Robots.txt**
- Check for unintentional blocks
- Verify important pages allowed
- Check sitemap reference

**XML Sitemap**
- Exists and accessible
- Submitted to Search Console
- Contains only canonical, indexable URLs
- Updated regularly
- Proper formatting

**Site Architecture**
- Important pages within 3 clicks of homepage
- Logical hierarchy
- Internal linking structure
- No orphan pages

**Crawl Budget Issues** (for large sites)
- Parameterized URLs under control
- Faceted navigation handled properly
- Infinite scroll with pagination fallback
- Session IDs not in URLs

### Indexation

**Index Status**
- site:domain.com check
- Search Console coverage report
- Compare indexed vs. expected

**Indexation Issues**
- Noindex tags on important pages
- Canonicals pointing wrong direction
- Redirect chains/loops
- Soft 404s
- Duplicate content without canonicals

**Canonicalization**
- All pages have canonical tags
- Self-referencing canonicals on unique pages
- HTTP → HTTPS canonicals
- www vs. non-www consistency
- Trailing slash consistency

### Site Speed & Core Web Vitals

**Core Web Vitals**
- LCP (Largest Contentful Paint): < 2.5s
- INP (Interaction to Next Paint): < 200ms
- CLS (Cumulative Layout Shift): < 0.1

**Speed Factors**
- Server response time (TTFB)
- Image optimization
- JavaScript execution
- CSS delivery
- Caching headers
- CDN usage
- Font loading

**Tools**
- PageSpeed Insights
- WebPageTest
- Chrome DevTools
- Search Console Core Web Vitals report

### Mobile-Friendliness

- Responsive design (not separate m. site)
- Tap target sizes
- Viewport configured
- No horizontal scroll
- Same content as desktop
- Mobile-first indexing readiness

### Security & HTTPS

- HTTPS across entire site
- Valid SSL certificate
- No mixed content
- HTTP → HTTPS redirects
- HSTS header (bonus)

### URL Structure

- Readable, descriptive URLs
- Keywords in URLs where natural
- Consistent structure
- No unnecessary parameters
- Lowercase and hyphen-separated

---

## On-Page SEO Audit

### Title Tags

**Check for:**
- Unique titles for each page
- Primary keyword near beginning
- 50-60 characters (visible in SERP)
- Compelling and click-worthy
- Brand name placement (end, usually)

**Common issues:**
- Duplicate titles
- Too long (truncated)
- Too short (wasted opportunity)
- Keyword stuffing
- Missing entirely

### Meta Descriptions

**Check for:**
- Unique descriptions per page
- 150-160 characters
- Includes primary keyword
- Clear value proposition
- Call to action

**Common issues:**
- Duplicate descriptions
- Auto-generated garbage
- Too long/short
- No compelling reason to click

### Heading Structure

**Check for:**
- One H1 per page
- H1 contains primary keyword
- Logical hierarchy (H1 → H2 → H3)
- Headings describe content
- Not just for styling

**Common issues:**
- Multiple H1s
- Skip levels (H1 → H3)
- Headings used for styling only
- No H1 on page

### Content Optimization

**Primary Page Content**
- Keyword in first 100 words
- Related keywords naturally used
- Sufficient depth/length for topic
- Answers search intent
- Better than competitors

**Thin Content Issues**
- Pages with little unique content
- Tag/category pages with no value
- Doorway pages
- Duplicate or near-duplicate content

### Image Optimization

**Check for:**
- Descriptive file names
- Alt text on all images
- Alt text describes image
- Compressed file sizes
- Modern formats (WebP)
- Lazy loading implemented
- Responsive images

### Internal Linking

**Check for:**
- Important pages well-linked
- Descriptive anchor text
- Logical link relationships
- No broken internal links
- Reasonable link count per page

**Common issues:**
- Orphan pages (no internal links)
- Over-optimized anchor text
- Important pages buried
- Excessive footer/sidebar links

### Keyword Targeting

**Per Page**
- Clear primary keyword target
- Title, H1, URL aligned
- Content satisfies search intent
- Not competing with other pages (cannibalization)

**Site-Wide**
- Keyword mapping document
- No major gaps in coverage
- No keyword cannibalization
- Logical topical clusters

---

## Content Quality Assessment

### E-E-A-T Signals

**Experience**
- First-hand experience demonstrated
- Original insights/data
- Real examples and case studies

**Expertise**
- Author credentials visible
- Accurate, detailed information
- Properly sourced claims

**Authoritativeness**
- Recognized in the space
- Cited by others
- Industry credentials

**Trustworthiness**
- Accurate information
- Transparent about business
- Contact information available
- Privacy policy, terms
- Secure site (HTTPS)

### Content Depth

- Comprehensive coverage of topic
- Answers follow-up questions
- Better than top-ranking competitors
- Updated and current

### User Engagement Signals

- Time on page
- Bounce rate in context
- Pages per session
- Return visits

---

## Common Issues by Site Type

### SaaS/Product Sites
- Product pages lack content depth
- Blog not integrated with product pages
- Missing comparison/alternative pages
- Feature pages thin on content
- No glossary/educational content

### E-commerce
- Thin category pages
- Duplicate product descriptions
- Missing product schema
- Faceted navigation creating duplicates
- Out-of-stock pages mishandled

### Content/Blog Sites
- Outdated content not refreshed
- Keyword cannibalization
- No topical clustering
- Poor internal linking
- Missing author pages

### Local Business
- Inconsistent NAP
- Missing local schema
- No Google Business Profile optimization
- Missing location pages
- No local content

---

## Output Format

### Audit Report Structure

**Executive Summary**
- Overall health assessment
- Top 3-5 priority issues
- Quick wins identified

**Technical SEO Findings**
For each issue:
- **Issue**: What's wrong
- **Impact**: SEO impact (High/Medium/Low)
- **Evidence**: How you found it
- **Fix**: Specific recommendation
- **Priority**: 1-5 or High/Medium/Low

**On-Page SEO Findings**
Same format as above

**Content Findings**
Same format as above

**Prioritized Action Plan**
1. Critical fixes (blocking indexation/ranking)
2. High-impact improvements
3. Quick wins (easy, immediate benefit)
4. Long-term recommendations

---

## Tools Referenced

**Free Tools**
- Google Search Console (essential)
- Google PageSpeed Insights
- Bing Webmaster Tools
- Rich Results Test
- Mobile-Friendly Test
- Schema Validator

**Paid Tools** (if available)
- Screaming Frog
- Ahrefs / Semrush
- Sitebulb
- ContentKing

---

## Questions to Ask

If you need more context:
1. What pages/keywords matter most?
2. Do you have Search Console access?
3. Any recent changes or migrations?
4. Who are your top organic competitors?
5. What's your current organic traffic baseline?

---

## Related Skills

- **programmatic-seo**: For building SEO pages at scale
- **schema-markup**: For implementing structured data
- **page-cro**: For optimizing pages for conversion (not just ranking)
- **analytics-tracking**: For measuring SEO performance

How to Use This Skill Unit

Option A: Project-Specific (Recommended)

  1. Click "Download" above
  2. In your project, create the directory: .agent/skills/seo-audit/
  3. Save the file as SKILL.md
  4. The agent will automatically discover the skill based on its description.

Option B: Global Installation (All Agents)

Save the file to these locations to make it available across all projects:

  • Claude Code: ~/.claude/skills/coreyhaines31/marketingskills/seo-audit/SKILL.md
  • Cursor: ~/.cursor/skills/coreyhaines31/marketingskills/seo-audit/SKILL.md
  • Antigravity: ~/.gemini/antigravity/skills/coreyhaines31/marketingskills/seo-audit/SKILL.md

🚀 Install with CLI:
npx skills add coreyhaines31/marketingskills

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Complete Guide

How to use this Skill in Claude Code & Cursor

For Claude Code (CLI)

To use this skill in Claude Code, copy the rule content into your project's custom instructions or follow our Add-Skill CLI guide. This ensures Claude follows your standards during every code generation.

For Cursor & Windsurf

For Cursor or Windsurf, individual skills are best used in the "Rules for AI" section. This specific unit helps the agent avoid seo issues, leading to cleaner, more efficient code.

Why the skill format matters: the standardized Agent Skills format lets your AI agent load detailed instructions only when they are relevant, keeping your prompt clean while improving results.

Source & attribution

This skill is categorized under Seo and is published by Corey Haines, maintained in coreyhaines31/marketingskills.

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