Technical SEO audits often produce a hundred-item report where three items matter. This is the order we work in, which finds the problems that actually cost traffic before the ones that make a report look thorough.
Start with the checks that can hide an entire site: indexability, robots directives and canonicals. Then crawlability and site structure, then speed and Core Web Vitals, then structured data. Most real problems are found in the first group, and most audit reports spend their length on the last.
First: can Google see the site at all?
- Search site:yourdomain.com. If nothing appears, stop and fix that before anything else.
- Check for noindex meta tags on pages that should be indexed. Staging settings carrying into production is the classic disaster.
- Read robots.txt for a blanket Disallow.
- Check canonical tags point at the correct live URLs, not staging or a competitor's domain, which happens more often than you would expect.
- Confirm one canonical domain: www or non-www, https only, everything else redirecting.
- Check for a manual action in Search Console.
These six take fifteen minutes and account for most of the catastrophic problems we are called about.
Second: crawlability and structure
- Crawl the site and list every 404 and redirect chain.
- Find orphan pages with no internal links. These rarely rank.
- Check click depth: important pages should be within three clicks of the homepage.
- Confirm the XML sitemap lists only canonical, indexable, 200-status URLs.
- Check for duplicate or near-duplicate pages competing with each other.
- Verify pagination and faceted navigation are not generating thousands of near-duplicate URLs.
Third: speed and Core Web Vitals
| Metric | Target | Usual cause of failure |
|---|---|---|
| Largest Contentful Paint | Under 2.5s | Oversized hero image, render-blocking fonts |
| Interaction to Next Paint | Under 200ms | Too much third-party JavaScript |
| Cumulative Layout Shift | Under 0.1 | Images without dimensions, late-loading banners |
| Time to First Byte | Under 600ms | Cheap hosting, no caching |
Use the field data in Search Console rather than a Lighthouse score. They measure different things and only one feeds the ranking signal.
Fourth: on-page and markup
- Every page has a unique title and meta description.
- One H1 per page, with no skipped heading levels.
- Images have meaningful alt text where they carry information.
- Structured data validates, and marks up only visible content.
- Internal links use descriptive anchor text.
- Mobile version contains the same content as desktop, since Google indexes mobile first.
Fifth: the things people check first and should check last
Keyword density, exact-match anchor ratios, and long lists of minor warnings from crawling tools. These fill audit reports and rarely change outcomes.
If a report opens with forty pages of these and never mentions whether your key pages are indexed, it was produced to look thorough rather than to be useful.
What to do with the findings
Sort by impact rather than by ease. One noindex tag on a template affecting fifty pages outranks two hundred missing alt attributes in every case.
Then re-audit after fixing rather than assuming. The most common failure of technical SEO is a report that is delivered, agreed, and never implemented.
Frequently asked questions
What is a technical SEO audit?
A review of the technical factors affecting whether search engines can crawl, index and rank your site: indexability, robots directives, canonicals, site structure, speed and structured data. It is distinct from content or link analysis.
How often should I run one?
Annually for a stable site, and after any redesign, migration, platform change or unexplained traffic drop. Continuous monitoring of Search Console coverage catches most problems in between.
What is the most common technical SEO problem?
A noindex directive left on pages that should be indexed, usually carried over from staging. It is trivial to fix, silently removes the site from search, and often goes unnoticed for weeks.
Do I need a tool to audit my site?
A crawler such as Screaming Frog or Sitebulb makes it far faster, and the highest-value checks are all manual: site: search, view source for noindex, read robots.txt, check canonicals. Those need nothing but a browser.
Is technical SEO more important than content?
No. Technical work makes a site eligible to rank; content and links decide whether it does. A technically perfect site with thin content ranks for nothing. The exception is when something technical is blocking indexing entirely, in which case nothing else matters until it is fixed.