Technical SEO Audit Service

If I had to sum up a technical SEO audit in one sentence: it is the inspection you run before your content and links get a chance to work. It asks three questions: can Google get in, can it see everything, and does it understand what it sees. The output is a list of bugs sorted by impact, not a content review or a backlink analysis.

Common areas a technical audit covers include crawlability, indexation, rendering, performance, structured data, [canonicalisation](/canonical-tag/), and [redirects](/301-redirect/). I always start with crawlability because if a search engine cannot access a page, nothing else matters. Last year I audited a site where 40% of product pages were blocked by [robots.txt](/robots-txt/). The product descriptions were excellent, but Google never saw them.

Many people confuse a technical audit with a general SEO check-up. A technical audit ignores meta descriptions, headings, and keyword usage. It focuses on infrastructure: server responses, JavaScript execution, Core Web Vitals, and schema markup. For example, I once found a client's entire blog was rendered client-side. Googlebot saw an empty page. A content audit would have missed that entirely.

A good audit also checks for duplicate content via canonical tags and [hreflang](/hreflang-tags/) for international sites. It verifies that your sitemap matches your indexable content. If you rely on [JavaScript frameworks](/javascript-seo/), the audit must test rendering behaviour. I always use a crawler first, then confirm with Google Search Console and server logs.

A technical audit is not something you run every month. It matters most during specific events. The first is a site migration. New domain, new CMS, or new URL structure? Run an audit immediately to catch redirect chains, lost pages, and indexing drops. I have seen sites lose 50% of organic traffic within a week because redirects were implemented incorrectly.

Second, before a major content push. If you are about to launch 100 new pages, make sure the technical foundation can support them. Otherwise you are pouring water into a cracked pipe.

Third, when traffic drops without explanation. Before you panic about algorithm updates, check if your pages are still indexable. A noindex tag left on a staging environment is a common culprit.

Fourth, after any significant technology change — switching from server-side to client-side rendering, adding a new subdomain, or moving to a new hosting provider.

Some people argue you can rely on Google Search Console alone. That is a mistake. Search Console reports what Google already knows, but it will not tell you how your site renders in a headless Chrome instance or whether your [Core Web Vitals](/core-web-vitals/) are affected by third-party scripts. I always combine crawler data, log analysis, and real user monitoring.

If it has been more than six months since your last full audit, you are probably accumulating technical debt. Small issues compound: broken links accumulate, [duplicate content](/duplicate-content/) grows, meta data rots, and JavaScript libraries change behaviour. A six-month audit cycle is the minimum for most sites.

I used to treat a technical audit like a content audit. I would spend hours rewriting meta descriptions and fixing headings while ignoring that Google could not crawl half the site. Now I start with crawlability every time.

I also used to fix low-hanging fruit first. Fixing 50 broken links on blog posts feels productive, but if your product pages are returning 500 errors, you are wasting time. I now prioritise issues that block indexation or cause crawling waste.

I underestimated JavaScript rendering until I saw a client lose 60% of blog traffic because their React app loaded content asynchronously. Googlebot executed the JavaScript, but the key content appeared after its timeout. The pages were indexed, but the text was missing.

Another mistake: I ran audits in isolation without tying fixes to business metrics. Now I track how each fix impacts organic sessions, crawl budget use, and revenue. A technical fix that improves crawl efficiency on £10-per-click pages is worth more than a general site-wide performance tweak.

I also used to ignore server log analysis. Crawler reports show you what Google found; server logs show you what Google actually requested. The difference taught me that many of my 'crawl issues' were just Google avoiding low-value pages. Now I use logs to spot waste and prioritise cleanup.