Technical SEO Audit: 15 Things to Check on Your Website

What Is a Technical SEO Audit?

A technical SEO audit is a review of the technical parts of a website that can affect how search engines crawl, understand, index, and access its pages.

Technical SEO is different from writing content or building backlinks. It focuses on making sure search engines can properly access your website and that visitors can use it without major technical problems.

Why Is Technical SEO Important?

Even a website with excellent content can have search visibility problems if important pages cannot be crawled or indexed.

A technical SEO audit helps identify problems such as broken links, incorrect redirects, slow pages, indexing issues, duplicate URLs, and mobile usability problems.

15 Technical SEO Audit Checks

Use the following checks as a practical starting point for a technical SEO audit.

1. Check Crawlability

Search engines need to be able to crawl the important pages on your website. Check whether important resources and pages are accidentally blocked from crawling.

2. Check Indexing

Make sure important pages can be indexed by search engines. Review Google Search Console for excluded pages, indexing errors, and unexpected indexing problems.

3. Review robots.txt

Check your robots.txt file to make sure it does not block important pages or resources that search engines need to access.

4. Check Your XML Sitemap

Your XML sitemap should contain the important URLs you want search engines to discover. Check that it is accessible, uses the correct domain, and does not contain unnecessary or broken URLs.

5. Check HTTPS

Make sure your website consistently uses HTTPS and that HTTP versions redirect correctly to the preferred secure version.

6. Check Canonical URLs

Canonical URLs help search engines understand which version of a page is preferred when similar or duplicate URLs exist.

7. Review URL Structure

Important URLs should be simple, descriptive, and consistent. Avoid unnecessarily complicated URLs and structures that make pages difficult to understand or maintain.

8. Check Redirects

Review redirects for important pages. Make sure old URLs redirect to relevant destinations and avoid unnecessary redirect chains.

9. Find 404 Errors

Broken URLs can create poor user experiences and make website maintenance harder. Crawl your website and identify important links that return 404 errors.

10. Check Website Speed

Slow pages can make a website harder to use. Check important pages for large images, unnecessary scripts, inefficient resources, and other factors that may increase loading time.

11. Review Core Web Vitals

Core Web Vitals provide useful signals about loading performance, responsiveness, and visual stability. Review important pages and look for opportunities to improve the user experience.

12. Check Mobile Usability

Test your website on smaller screens. Check navigation, text size, buttons, forms, images, and page layouts to make sure the site remains easy to use on mobile devices.

13. Check Structured Data

Review structured data on important pages and make sure it accurately describes the visible content. Fix errors and avoid using structured data that does not apply to the page.

14. Check Internal Links

Internal links help visitors and search engines discover related pages. Important pages should be connected through useful, descriptive internal links.

15. Check JavaScript and Rendering

Make sure important content and links can be accessed and understood by search engines when JavaScript is used to render parts of the website.

How to Prioritize Technical SEO Problems

You do not need to fix every technical issue at the same time. Start with problems that prevent important pages from being crawled, indexed, or accessed.

• Fix critical crawling and indexing problems first.
• Fix major security, redirect, and URL problems.
• Improve slow pages and important performance issues.
• Fix mobile usability problems.
• Review structured data and internal linking.

Final Thoughts

A technical SEO audit helps you find problems that may prevent search engines and visitors from accessing your website effectively.

Use these checks as a starting point and review your website regularly, especially after redesigns, migrations, domain changes, or major technical updates.