How to Perform a Technical SEO Audit: Checklist & Fixes

Technical SEO Audit Guide: Identify & Fix Website SEO Issues

🔍 What Is a Technical SEO Audit?

A technical SEO audit is a comprehensive checkup of your website’s backend elements that impact crawling, indexing, and overall search visibility. It helps you identify hidden issues that may prevent search engines from fully understanding or ranking your site.

Think of it as a "health scan" for your website's structure and performance.

⚙️ Key Elements of a Technical SEO Audit

✅ 1. Crawlability & Indexability Check

🔧 Use tools like:

• Google Search Console (Coverage Report)

• Screaming Frog SEO Spider

• Ahrefs Site Audit

Look for:

• Blocked pages in robots.txt

• Noindex tags applied accidentally

• Pages excluded from sitemap

📌 Fix: Ensure all important URLs are crawlable and indexable. Submit your XML sitemap to Search Console.

✅ 2. Website Speed & Core Web Vitals

Use:

• Google PageSpeed Insights

• GTmetrix

• Lighthouse (Chrome DevTools)

Check:

• Largest Contentful Paint (LCP)

• First Input Delay (FID)

• Cumulative Layout Shift (CLS)

📌 Fix: Compress images, enable lazy loading, and reduce third-party scripts. Optimize CSS and JS files.

✅ 3. Mobile-Friendliness

Test your site using:

• Google’s Mobile-Friendly Test

• Search Console’s Mobile Usability Report

📌 Fix: Use responsive design, optimize tap targets, and ensure font sizes are legible. Your content should be 100% accessible on mobile.

✅ 4. Broken Links & Redirect Chains

Use Screaming Frog, Ahrefs, or SEMrush to find:

• 404 errors (dead pages)

• Broken internal/external links

• Excessive redirect hops

📌 Fix: Redirect broken URLs to relevant alternatives and clean up unnecessary redirect chains.

✅ 5. HTTPS and Secure Connection

Security is a ranking factor.

📌 Fix: Ensure your site uses HTTPS. All HTTP pages should redirect to HTTPS versions using 301 redirects.

✅ 6. URL Structure & Canonicalization

Check for:

• Long, messy, or duplicated URLs

• Missing or incorrect <link rel="canonical"> tags

• Duplicate content caused by parameterized URLs

📌 Fix: Use SEO-friendly, descriptive URLs. Apply canonical tags to avoid content duplication and resolve pagination issues.

✅ 7. Structured Data & Schema Markup

Use Google's Rich Results Test or Schema.org validator.

📌 Fix: Implement proper schema for:

• Articles

• Products

• Breadcrumbs

• Local business

• Reviews

This boosts your visibility with rich snippets in search.

✅ 8. Image Optimization

Check:

• Missing alt attributes

• Large file sizes

• Non-descriptive filenames

📌 Fix: Add keyword-rich alt tags, compress image files, and use next-gen formats (e.g., WebP).

✅ 9. Internal Linking and Crawl Depth

Audit:

• Pages with no internal links (orphan pages)

• Pages buried more than 3–4 clicks deep

• Improper anchor text usage

📌 Fix: Link related pages using relevant anchor text. Use tools like Ahrefs or Screaming Frog to identify orphan content.

👉 Learn more about Orphan Pages in SEO and how to fix them efficiently.

✅ 10. Duplicate Content and Thin Pages

Use Copyscape or Siteliner to detect:

• Content copied across multiple pages

• Very short or low-value pages

📌 Fix: Merge similar content, add depth, or remove thin pages altogether.

✅ 11. XML Sitemap and Robots.txt Validation

• Ensure your sitemap is submitted, updated, and error-free

• Verify robots.txt doesn’t accidentally block important URLs

📌 Fix: Keep these files clean and updated. Audit them monthly.

📋 Quick Technical SEO Audit Checklist

💡 Final Thoughts

A technical SEO audit is essential for long-term performance. Even the best content can't rank if your site is slow, broken, or inaccessible to search engines.

🎯 Pro Tip: Want a deep technical audit with actionable fixes?
Use our expert SEO Audit Services or request a free Website Analysis to start identifying hidden SEO blockers.