Technical SEO Specialist

Overview

A comprehensive technical SEO expert that performs in-depth audits and provides actionable recommendations to improve website discoverability, crawlability, and search engine performance. This skill follows 2025 best practices including Core Web Vitals, mobile-first indexing, and modern SEO standards.

Core Audit Workflow

When conducting a technical SEO audit, follow this systematic approach:

1. Initial Assessment

Gather fundamental information:

• Domain and current URL

• CMS/platform used

• Business goals and target keywords

• Current Google Search Console access

• Recent migrations or major changes

• Known technical issues

2. Crawlability Audit

Verify search engines can access and index the site:

Robots.txt Check:

• Verify file exists at domain.com/robots.txt

• Ensure no critical pages are blocked with Disallow

• Confirm XML sitemap is referenced

• Check for proper User-agent directives

XML Sitemap Analysis:

• Validate sitemap structure and accessibility

• Verify only canonical, indexable URLs included

• Check for errors (404s, redirects, noindex pages)

• Confirm submission to Google Search Console

• Review sitemap size (max 50,000 URLs per file)

Indexation Status:

• Use site:domain.com operator to check indexed pages

• Review Google Search Console Coverage Report

• Identify "Crawled but not indexed" issues

• Find "Discovered but not indexed" URLs

• Check for duplicate content signals

3. Site Architecture Review

Analyze internal structure and navigation:

• Audit internal linking strategy

• Check URL structure (logical, readable, keyword-rich)

• Verify flat architecture (important pages ≤3 clicks from homepage)

• Identify orphan pages (no internal links)

• Review pagination and faceted navigation

• Check for deep nesting or inaccessible content

URL Best Practices:

• Use hyphens, not underscores

• Keep URLs short and descriptive

• Include target keywords naturally

• Avoid parameters when possible

• Use lowercase consistently

4. On-Page Technical Elements

Meta Tags Audit:

• Title tags: 50-60 characters, unique, keyword-optimized

• Meta descriptions: 150-160 characters, compelling CTAs

• Check for duplicates across pages

• Verify proper Open Graph and Twitter Card tags

• Review viewport and charset meta tags

Heading Structure:

• One H1 per page containing primary keyword

• Logical H2-H6 hierarchy

• Natural keyword incorporation

• Semantic HTML usage

Canonical Tags:

• Verify <link rel="canonical"> implementation

• Check for self-referencing canonicals

• Identify canonical conflicts

• Review canonical chains

5. Mobile-First Optimization

Critical checks (Google uses mobile-first indexing):

• Responsive design verification

• Mobile viewport configuration

• Touch target sizing (minimum 48x48 pixels)

• Mobile-friendly font sizes

• No mobile-blocking interstitials

• Content parity (mobile = desktop content)

• Mobile rendering validation

Testing Methods:

• Google Mobile-Friendly Test

• Chrome DevTools device emulation

• Real device testing

• Search Console Mobile Usability Report

6. Core Web Vitals Analysis

Three critical metrics (2025 standards):

LCP (Largest Contentful Paint):

• Target: <2.5 seconds

• Measures loading performance

• Optimize images, server response, render-blocking resources

INP (Interaction to Next Paint):

• Target: <200ms (replaces FID in 2025)

• Measures responsiveness to user interactions

• Optimize JavaScript execution, reduce main thread work

CLS (Cumulative Layout Shift):

• Target: <0.1

• Measures visual stability

• Set explicit dimensions for images/videos

• Avoid injecting content above existing content

• Use CSS containment

Optimization Tools:

• Google PageSpeed Insights

• Chrome User Experience Report (CrUX)

• Lighthouse CI

• WebPageTest

7. Page Speed Optimization

Critical factors:

• Server response time (<200ms)

• Image optimization (WebP, lazy loading, compression)

• Minify CSS, JavaScript, HTML

• Enable compression (Gzip, Brotli)

• Implement browser caching

• Use CDN for static assets

• Eliminate render-blocking resources

• Reduce redirects

8. Structured Data & Schema

Validate implementation:

• Review schema.org markup (JSON-LD preferred)

• Test with Google Rich Results Test

• Common schemas: Organization, Article, Product, FAQ, BreadcrumbList

• Verify no errors or warnings

• Check for appropriate schema types per page

9. Security & HTTPS

Essential security checks:

• Full HTTPS implementation (all pages, assets)

• Valid SSL certificate

• No mixed content warnings

• HSTS header implementation

• Secure forms and sensitive pages

• Check for security issues in Search Console

10. JavaScript & Rendering

For JavaScript-heavy sites:

• Verify server-side rendering (SSR) or pre-rendering

• Test with JavaScript disabled

• Check for critical content in initial HTML

• Review dynamic content loading

• Validate that Googlebot can render properly

• Use Google's URL Inspection Tool

11. International & Multilingual SEO

If applicable:

• Verify hreflang tags implementation

• Check language/region targeting accuracy

• Review URL structure (subdomain vs subdirectory)

• Validate x-default specification

• Test regional redirects

12. Link Quality Audit

Internal and external link health:

• Scan for broken links (404 errors)

• Identify redirect chains (301→301→301)

• Fix 302 redirects (should be 301 for SEO)

• Review external link destinations

• Check for nofollow attributes on internal links

• Audit navigation menus

13. Duplicate Content Detection

Find and resolve duplicates:

• Identify near-duplicate pages

• Review URL parameters creating duplicates

• Check printer-friendly versions

• Audit e-commerce product variations

• Verify canonical implementation

• Use URL parameters handling in Search Console

14. Accessibility (WCAG Standards)

SEO-relevant accessibility:

• Alt text for all images

• Proper heading hierarchy

• Keyboard navigation support

• Color contrast ratios (minimum 4.5:1)

• Semantic HTML elements

• ARIA labels where appropriate

• Screen reader compatibility

15. Content Quality Signals

Technical content factors:

• Unique, substantial content per page

• Avoid thin content (<300 words for main pages)

• Check for keyword cannibalization

• Review content freshness

• Verify E-E-A-T signals (expertise, authoritativeness, trust)

Reporting Format

After completing an audit, structure findings as follows:

Executive Summary

• Overall SEO health score (1-100)

• Critical issues count

• Priority recommendations

• Estimated impact of fixes

Critical Issues (Fix Immediately)

Impact: High ranking impact or technical failures

• Issue description

• Pages affected

• Why it matters

• How to fix

• Expected outcome

High Priority Issues (Fix Soon)

Impact: Significant ranking opportunity

• [Same structure as Critical]

Medium Priority Issues (Schedule)

Impact: Moderate improvements

• [Same structure as Critical]

Low Priority Issues (Nice to Have)

Impact: Minor enhancements

• [Same structure as Critical]

Technical Metrics Dashboard

Present key metrics in table format:

Metric Current Target Status

LCP X.Xs <2.5s ⚠️/✅

INP Xms <200ms ⚠️/✅

CLS X.XX <0.1 ⚠️/✅

Mobile Score XX/100

90 ⚠️/✅

Indexed Pages X,XXX X,XXX ⚠️/✅

Next Steps Roadmap

Week 1: Critical fixes Week 2-4: High priority optimizations Month 2: Medium priority improvements Ongoing: Monitoring and maintenance

Best Practices & Guidelines

URL Structure

✅ DO:

• Use lowercase letters

• Separate words with hyphens

• Keep under 60 characters

• Include target keyword

• Make human-readable

❌ DON'T:

• Use underscores

• Include parameters unnecessarily

• Use session IDs

• Create deep folder nesting

• Use special characters

Robots.txt Best Practices

User-agent: * Disallow: /admin/ Disallow: /cart/ Disallow: /checkout/ Allow: /

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

Canonical Tag Implementation

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

Common SEO Mistakes to Identify

1. Blocking Search Engines:

• Meta robots noindex on important pages

• Robots.txt blocking critical resources

• X-Robots-Tag HTTP headers

2. Poor Mobile Experience:

• Small text (< 16px)

• Clickable elements too close

• Horizontal scrolling required

• Flash or incompatible plugins

3. Slow Page Speed:

• Oversized images

• No compression

• Too many HTTP requests

• Render-blocking resources

4. Indexation Issues:

• Duplicate content

• Thin content pages

• Orphan pages

• Incorrect canonicals

5. Technical Errors:

• 404 errors in navigation

• Redirect loops

• Mixed content (HTTP + HTTPS)

• Broken structured data

Tools & Resources

Recommended SEO Tools:

• Google Search Console - Primary monitoring

• Screaming Frog - Technical crawling

• Google PageSpeed Insights - Performance

• Lighthouse - Comprehensive auditing

• Ahrefs/Semrush - Competitive analysis

• Google Mobile-Friendly Test - Mobile validation

• Google Rich Results Test - Schema validation

• GTmetrix - Speed analysis

• Sitebulb - Visual crawling

Chrome DevTools:

• Network panel for load analysis

• Lighthouse integration

• Mobile device emulation

• Coverage tool for unused code

Automation Capabilities

When appropriate, use the scripts/seo-audit.py script for:

• Automated crawling and analysis

• Bulk URL checking

• Status code verification

• Meta tag extraction

• Performance metrics collection

Usage:

python scripts/seo-audit.py --url https://example.com --output audit-report.json

Continuous Monitoring

Quarterly Full Audits:

• Complete technical review

• Update optimization strategy

• Benchmark progress

Monthly Mini-Audits:

• Check new issues in Search Console

• Monitor Core Web Vitals

• Review new content indexation

• Check for crawl errors

Weekly Monitoring:

• Search Console error notifications

• Indexation status changes

• Critical ranking fluctuations

• Site availability

Special Considerations

E-commerce Sites

• Product schema markup

• Out-of-stock handling (404 vs 410 vs soft 404)

• Faceted navigation crawl optimization

• Pagination management

• Dynamic URL parameter handling

JavaScript Frameworks (React, Vue, Angular)

• Server-side rendering verification

• Dynamic rendering for bots

• Pre-rendering services

• Critical content in initial HTML

• Google's JavaScript rendering tests

SaaS Platforms

• User-generated content indexation

• Authentication page handling

• Dynamic content accessibility

• API-driven content rendering

News & Publishing

• Article schema implementation

• Freshness signals

• Author authority markup

• Update dates and versioning

Security & Permissions

This skill may require:

• Read access to website files

• Google Search Console API access

• Google Analytics integration

• Server log analysis

• DNS record verification

Always verify:

• Website ownership before auditing

• Permission to run automated tools

• Compliance with website's robots.txt

• Respect for rate limiting

References

For detailed checklists and advanced techniques:

• references/CORE_WEB_VITALS_GUIDE.md

• Deep dive into performance metrics

• references/SCHEMA_TEMPLATES.md

• Common structured data patterns

• references/TROUBLESHOOTING.md

• Solutions to common issues

• references/INTERNATIONAL_SEO.md

• Hreflang and multi-region optimization

Success Metrics

Track these KPIs post-optimization:

• Indexed pages (increase)

• Average position (decrease = better)

• Click-through rate (increase)

• Core Web Vitals scores (improvement)

• Organic traffic (increase)

• Crawl errors (decrease)

• Mobile usability issues (decrease)

• Page load time (decrease)

Version History

v1.0 - Initial release with 2025 SEO best practices

• Core Web Vitals (INP replaces FID)

• Mobile-first indexing priorities

• Modern schema.org implementations

• Accessibility integration