name: seo_technical
router_kit: ManagementKit
description: Performs technical SEO audits covering site speed, crawlability, indexability, mobile-friendliness, security, and structured data. Identifies technical issues preventing optimal search performance.
metadata:
skillport:
category: auto-healed
tags: [architecture, automation, best practices, clean code, coding, collaboration, compliance, crawling, debugging, design patterns, development, documentation, efficiency, git, indexing, meta tags, optimization, productivity, programming, project management, quality assurance, refactoring, schema.org, seo technical, sitemap, software engineering, standards, testing, utilities, version control, workflow]

Technical SEO Checker

This skill performs comprehensive technical SEO audits to identify issues that may prevent search engines from properly crawling, indexing, and ranking your site.

When to Use This Skill

• Launching a new website
• Diagnosing ranking drops
• Pre-migration SEO audits
• Regular technical health checks
• Identifying crawl and index issues
• Improving site performance
• Fixing Core Web Vitals issues

What This Skill Does

1. Crawlability Audit: Checks robots.txt, sitemaps, crawl issues
2. Indexability Review: Analyzes index status and blockers
3. Site Speed Analysis: Evaluates Core Web Vitals and performance
4. Mobile-Friendliness: Checks mobile optimization
5. Security Check: Reviews HTTPS and security headers
6. Structured Data Audit: Validates schema markup
7. URL Structure Analysis: Reviews URL patterns and redirects
8. International SEO: Checks hreflang and localization

How to Use

Full Technical Audit

Perform a technical SEO audit for [URL/domain]

Specific Issue Check

Check Core Web Vitals for [URL]

Audit crawlability and indexability for [domain]

Pre-Migration Audit

Technical SEO checklist for migrating [old domain] to [new domain]

Instructions

When a user requests a technical SEO audit:

1. Audit Crawlability

```markdown
## Crawlability Analysis

### Robots.txt Review

URL: [domain]/robots.txt
Status: [Found/Not Found/Error]

Current Content:
[robots.txt content]

Issues Found:
- [Issue 1]
- [Issue 2]

Recommended robots.txt:
```
User-agent: *
Allow: /
Disallow: /admin/
Disallow: /private/

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

### XML Sitemap Review

Sitemap URL: [URL]
Status: [Found/Not Found/Error]

Issues Found:
- [Issue 1]

### Crawl Budget Analysis

Crawlability Score: [X]/10
```

1. Audit Indexability

```markdown
## Indexability Analysis

### Index Status Overview

### Index Blockers Check

### Canonical Tags Audit

### Duplicate Content Issues

Indexability Score: [X]/10
```

1. Audit Site Speed & Core Web Vitals

```markdown
## Performance Analysis

### Core Web Vitals

### Additional Performance Metrics

### Performance Issues

LCP Issues:
- [Issue]: [Impact] - [Solution]
- [Issue]: [Impact] - [Solution]

CLS Issues:
- [Issue]: [Impact] - [Solution]

Resource Loading:
| Resource Type | Count | Size | Issues |
| ------------- | ----- | ----- | ------- |
| Images | [X] | [X]MB | [notes] |
| JavaScript | [X] | [X]MB | [notes] |
| CSS | [X] | [X]KB | [notes] |
| Fonts | [X] | [X]KB | [notes] |

### Optimization Recommendations

High Impact:
1. [Recommendation] - Est. improvement: [X]s
2. [Recommendation] - Est. improvement: [X]s

Medium Impact:
1. [Recommendation]
2. [Recommendation]

Performance Score: [X]/10
```

1. Audit Mobile-Friendliness

```markdown
## Mobile Optimization Analysis

### Mobile-Friendly Test

### Responsive Design Check

### Mobile-First Indexing

Mobile Score: [X]/10
```

1. Audit Security & HTTPS

```markdown
## Security Analysis

### HTTPS Status

### Security Headers

Security Score: [X]/10
```

1. Audit URL Structure

```markdown
## URL Structure Analysis

### URL Pattern Review

### URL Issues Found

### Redirect Analysis

URL Score: [X]/10
```

1. Audit Structured Data

```markdown
## Structured Data Analysis

### Schema Markup Found

### Validation Results

Errors:
- [Error 1]: [affected pages] - [solution]
- [Error 2]: [affected pages] - [solution]

Warnings:
- [Warning 1]: [notes]

### Missing Schema Opportunities

Structured Data Score: [X]/10
```

1. Audit International SEO (if applicable)

```markdown
## International SEO Analysis

### Hreflang Implementation

### Language/Region Targeting

International Score: [X]/10
```

1. Generate Technical Audit Summary

```markdown
# Technical SEO Audit Report

Domain: [domain]
Audit Date: [date]
Pages Analyzed: [X]

## Overall Technical Health: [X]/100

Score Breakdown: ████████░░ Crawlability: 8/10 ███████░░░ Indexability: 7/10 █████░░░░░ Performance: 5/10 ████████░░ Mobile: 8/10 █████████░ Security: 9/10 ██████░░░░ URL Structure: 6/10 █████░░░░░ Structured Data: 5/10

## Critical Issues (Fix Immediately)

1. [Issue]: [Impact]

   • Affected: [pages/scope]
   • Solution: [specific fix]
   • Priority: 🔴 Critical

2. [Issue]: [Impact]

   • Affected: [pages/scope]
   • Solution: [specific fix]
   • Priority: 🔴 Critical

## High Priority Issues

1. [Issue]: [Solution]
2. [Issue]: [Solution]

## Medium Priority Issues

1. [Issue]: [Solution]
2. [Issue]: [Solution]

## Quick Wins

These can be fixed quickly for immediate improvement:

1. [Quick fix 1]
2. [Quick fix 2]
3. [Quick fix 3]

## Implementation Roadmap

### Week 1: Critical Fixes
- [ ] [Task 1]
- [ ] [Task 2]

### Week 2-3: High Priority
- [ ] [Task 1]
- [ ] [Task 2]

### Week 4+: Optimization
- [ ] [Task 1]
- [ ] [Task 2]

## Monitoring Recommendations

Set up alerts for:
- Core Web Vitals drops
- Crawl error spikes
- Index coverage changes
- Security issues
```

Example

User: "Check the technical SEO of example.com"

Output: [Comprehensive technical audit following the structure above]

Technical SEO Checklist

### Crawlability
- [ ] robots.txt is valid and not blocking important content
- [ ] XML sitemap exists and is submitted to GSC
- [ ] No crawl errors in Search Console
- [ ] No redirect chains or loops

### Indexability  
- [ ] Important pages are indexable
- [ ] Canonical tags are correct
- [ ] No duplicate content issues
- [ ] Pagination is handled correctly

### Performance
- [ ] Core Web Vitals pass
- [ ] Page speed under 3 seconds
- [ ] Images are optimized
- [ ] JS/CSS are minified

### Mobile
- [ ] Mobile-friendly test passes
- [ ] Viewport is configured
- [ ] Touch elements are properly sized

### Security
- [ ] HTTPS is enforced
- [ ] SSL certificate is valid
- [ ] No mixed content
- [ ] Security headers present

### Structure
- [ ] URLs are clean and descriptive
- [ ] Site architecture is logical
- [ ] Internal linking is strong

Tips for Success

1. Prioritize by impact - Fix critical issues first
2. Monitor continuously - Use Search Console alerts
3. Test changes - Verify fixes work before deploying widely
4. Document everything - Track changes for troubleshooting
5. Regular audits - Schedule quarterly technical reviews

Related Skills

Technical SEO Checker v1.1 - Enhanced

🔄 Workflow

Source: Google Search Central Checks & Web.dev Core Web Vitals

Phase 1: Foundation (Crawl & Index)

• [ ] Robots.txt: Ensure Allow and Disallow rules do not block critical resources (CSS/JS).
• [ ] Sitemap: Verify XML sitemap is up-to-date, clean (no 404/301s) and submitted to Search Console.
• [ ] Canonicalization: Check that every page has its own "self-referencing canonical" tag (Duplicate content prevention).

Phase 2: Performance (Core Web Vitals)

• [ ] LCP (Largest Contentful Paint): Preload hero images and do not lazy-load them. Target < 2.5s.
• [ ] CLS (Cumulative Layout Shift): Assign width and height to all images. Assign min-height to ad spaces. Target < 0.1.
• [ ] INP (Interaction to Next Paint): Split long JavaScript tasks (Long Tasks) that block the main thread. Target < 200 ms.

Phase 3: Architecture & Rendering

• [ ] Internal Linking: Check that important pages are not buried deep in site structure (Click Depth < 3).
• [ ] SSR/Hydration: Verify content is rendered server-side (Server-Side Rendering) for React/Next.js sites.
• [ ] Structured Data: Validate Schema.org markup (Article, Product, Breadcrumb) with Rich Results Test tool.

Checkpoints