How to Do a Technical Site Audit
A technical site audit is a structured review of crawlability, indexability, performance, and mobile behaviour to find issues that limit visibility.
If you have ever run a crawler and ignored Google Search Console data, you already know the audit is only half the story.
Key points
- Start with Google Search Console and a crawl tool — both are needed to spot issues accurately.
- Map the site into page types and templates before auditing to prioritise business-critical sections.
- Compare index status across Search Console, site: searches, and your expected index set to find gaps.
- Check robots.txt to confirm it blocks only pages that should stay out of crawling, not important content.
- Translate findings into prioritised recommendations using impact versus effort, stating the issue, fix, and value.
A travel booking site finds 3,000 orphan pages during a crawl
A travel booking site found 3,000 orphan pages during a crawl. These were old destination guides, invisible to crawlers. Google Search Console showed a steady decline in indexed pages. After adding navigation links, indexed pages rose by 40% in two weeks and organic traffic doubled. This shows how to conduct a technical seo site audit: start with a crawl and Search Console data.
Three areas where audits commonly miss the mark
- Ignoring rendering JavaScript rendering matters because search engines may need to process client-side code before they can see key content or links. Skipping this check can hide critical issues.
- Overlooking mobile Crawl errors should be reviewed separately for desktop and mobile. A page that works on desktop may fail on mobile, hurting mobile-first indexing.
- No duplicate content check Duplicate product descriptions seo issues often go undetected without a dedicated scan. Use a crawler to find identical or near-identical content across URLs.
Three ways an audit can go wrong
- Relying only on a crawler A crawler cannot see server logs, Search Console reports, or index status. Without that data, you miss crawl budget problems and soft 404s.
- Auditing without priorities Listing every issue without separating page types or business importance leads to wasted effort. Focus on high-impact, low-effort fixes first.
- Skipping sitemap audit Sitemaps should be checked for completeness and consistency with indexable URLs. A stale sitemap can mislead crawlers about what matters.
Common questions
What tools do I need for a technical site audit?
Start with Google Search Console and a crawl tool like Sitebulb or Screaming Frog. Both are needed to get accurate data.
How often should I run a technical site audit?
Run a full audit quarterly, or after major site changes like a redesign or platform migration.
What is the most common mistake in a technical audit?
Relying only on a crawler and ignoring Google Search Console data. That misses crawl budget issues and index status.
Sources
- Google Search Central Official documentation on crawlability, indexability, and rendering.
- Moz SEO Audit Checklist A practical checklist covering core audit areas and common pitfalls.
- Sitebulb Technical SEO Audit Guide A detailed guide on structuring and communicating audit findings.