How to Perform a Technical SEO Audit
A technical SEO audit reviews a website’s crawlability, indexability, rendering, performance, and architecture to find issues that can limit organic search visibility.
If you have ever focused on low-priority tweaks before fixing crawlability blockers, you already know the audit is only half the work.
Key points
- Start with a crawl and Google Search Console data to spot coverage gaps.
- When you learn how to conduct a technical seo site audit, prioritise fixing crawlability and indexability blockers before performance tweaks.
- Check for conflicts between robots.txt, noindex, canonicals, and redirects.
- Always assign severity, impact, and an action plan to your findings.
- Treat each audit as a point-in-time snapshot, not a permanent diagnosis.
The crawl missed the real problem
A mid-sized ecommerce site with 10,000 product pages ran a crawl that found no obvious errors. The team used a seo audit template to track issues and discovered from Google Search Console that 3,000 pages were excluded due to noindex tags on old category pages. The site had been running an old version of the category template that accidentally applied noindex. After removing those tags, updating the sitemap, and re-submitting in Search Console, indexed pages grew from 2,000 to 7,000 in eight weeks. A follow-up audit using the same template confirmed the fix and added 500 more indexed pages.
Three common mistakes that undermine your audit
- Ignoring Search Console Running a crawl without checking Google Search Console can miss critical indexation and coverage issues, such as soft 404s or manual actions.
- Low-impact focus Fixing performance issues before addressing crawlability or indexability blockers wastes effort; if important pages are not indexed, performance improvements bring no traffic.
- No action plan Delivering a list of findings without assigning severity, impact, or an action plan leaves teams unsure where to start and reduces the audit's value.
Three key components of a thorough audit
- Crawlability check Crawlability checks include robots.txt, internal links, sitemap coverage, and whether important pages are reachable by crawlers without unexpected blocking.
- Indexability review Indexability checks include noindex tags, canonical tags, duplicate URL variants, and whether key pages are actually indexed in Google through Search Console.
- Rendering and performance Rendering checks matter for JavaScript-heavy sites, and performance checks include Core Web Vitals, page speed, and mobile-friendliness, which affect user experience.
Common questions
What is the first step in a technical SEO audit?
Start with a crawl of your site and review Google Search Console data for coverage, sitemap, and crawl stats.
How often should I run a technical SEO audit?
Run an audit every three to six months, or after major site changes, as a point-in-time snapshot of site health.
Sources
- Google Search Central Official Google documentation on crawling, indexing, and rendering.
- Google Search Console Help Covers coverage reports, sitemap tools, and manual actions.
- Moz SEO Audit Checklist A practical checklist for conducting a technical SEO audit.