What Is a Technical SEO Audit? What It Covers and What You Get

A technical SEO audit is a structured check of whether search engines and AI assistants can find, read, understand and trust your website. It looks beneath the design and the copy at the things that quietly decide whether good pages are indexed at all: crawling, redirects, speed, structure, markup and errors. This guide explains what an audit covers, how it is carried out, what a good report looks like and how to turn the findings into fixes.

If you only remember one thing: an audit is not a score. It is a prioritised list of problems with the effort and likely impact of fixing each, so that you do the right things in the right order.

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What does a technical SEO audit check?

A thorough audit covers eight areas. Each answers a specific question about your site.

1. Crawlability

Can search engine crawlers reach your pages? The audit reviews the robots.txt file, blocked resources, crawl depth, orphan pages (pages with no links pointing to them) and whether important sections sit too many clicks from the home page. It also checks that you are not accidentally blocking AI crawlers you would like to allow.

2. Indexation

Which pages are in the index, and should they be? The audit compares what you want indexed with what Google reports, and looks for noindex tags on pages that matter, duplicate pages competing with each other, and thin or near-empty pages that dilute the site.

3. Site structure and internal linking

Does the structure make sense to a person and a crawler? This covers URL patterns, breadcrumbs, topic clusters and whether authority flows to the pages that earn enquiries. Internal links in body text are one of the cheapest improvements on most sites.

4. On-page signals

Titles, meta descriptions, headings and canonical tags. The audit looks for missing, duplicated or over-long titles, pages with no H1 or several, and canonical tags that point somewhere unintended.

5. Speed and mobile experience

Pages that load slowly or shift while loading lose visitors and can be held back in search. The audit measures real-world loading, image weight, scripts that block rendering and mobile layout problems.

6. Redirects and errors

Broken links, redirect chains, loops and soft errors. Redirect problems matter most during migrations, where lost URLs mean lost rankings. The audit lists every redirect and checks that old URLs reach the right new page in one step.

7. Structured data

Schema markup tells search engines and AI systems what a page is about: your organisation, services, articles, questions and answers. The audit validates what exists, finds errors, and checks that markup matches visible text. Markup that contradicts the page can do more harm than none.

8. Security and trust signals

HTTPS across the whole site, mixed-content warnings, visible contact and company details, and clear policies. These affect how both users and systems judge reliability.

How is a technical SEO audit carried out?

The process has five steps, and each leaves evidence you can check.

1. Access and baseline. The auditor needs read access to Search Console and analytics. The first look is at the last twelve months of data: which pages get impressions, which get clicks, and where the trend is heading.
2. Crawl. A crawler visits the site as a search engine would and records every URL, status, title, heading, link and tag.
3. Comparison. Crawl data is set against Search Console data. A page that gets impressions but is full of errors is a priority. A page with no impressions may simply be invisible.
4. Manual review. Tools miss context. An experienced person checks key pages, templates and the logic of the structure.
5. Prioritisation. Every finding is rated for impact and effort, then sequenced into a plan.

What should a technical SEO audit report contain?

A useful report is short enough to act on. Look for these elements:

• A summary in plain language, with the three or four issues that matter most.
• A prioritised issue list, each item with where it occurs, why it matters, how to fix it, and estimated effort.
• Evidence, such as example URLs and screenshots from your own data.
• A roadmap, showing what to fix in the first month, what to schedule, and what to leave alone.
• A note on risk, especially where fixes touch live pages, redirects or templates.
• What is not covered, so the scope is honest.

Be wary of a ninety-page export of tool output. If the report does not tell you what to do first, it is data, not an audit. Our own audit gives you a prioritised fix list rather than a long PDF, and it is available as a fixed-fee service on our pricing page.

How long does a technical SEO audit take?

For a small to medium site, expect roughly one to two weeks from access to delivery, depending on size and how quickly access is provided. Larger sites, stores and multi-language sites take longer. A rushed audit usually misses the manual review. Ask for the delivery date in writing when you agree the scope.

What are the most common technical SEO problems?

Patterns repeat across sites, which is useful because they are usually fixable.

• Several pages competing for one search, with similar titles and content, so none ranks well.
• Redirect chains and orphaned pages left over from past redesigns.
• Missing or duplicate titles and descriptions, especially on templates.
• Thin pages, such as empty category archives or tag pages, that dilute quality.
• Heavy images and scripts, slowing mobile pages.
• Unsafe URL changes, where pages that used to rank were moved without a redirect.
• Markup errors, or markup that does not match what is on the page.

Our own recent review of a legacy WordPress site is a typical example. It had archive pages and image URLs indexed alongside real content, plus anchor-fragment URLs that attracted impressions but could never be clicked. None of that is exotic, and all of it is fixable. The point of an audit is to find these things before they compound.

How do you act on a technical SEO audit?

Fix in order of impact against effort. Start with anything that blocks indexing or breaks pages, then redirects and structure, then speed and markup. Make changes in small batches, test each, and keep a record so you can reverse something if it goes wrong. After each batch, check Search Console for crawl errors and coverage changes over the following weeks.

Do not treat the audit as a one-off. Sites change with every new page and plugin, so a lighter check after major changes, and a full audit annually, keeps problems from returning. Technical health also supports your content work: the guide on SEO in South Africa explains how technical health, content and authority fit together, and our SEO services page shows how audits lead into a programme.

Frequently asked questions

Do I need a technical SEO audit before I publish new content?

Usually, yes. If the site has problems that stop pages being indexed or understood, new content will not perform as it should. An audit shows what to fix first.

Can I run a technical SEO audit myself?

You can check the basics with free tools and Search Console, and our free Search and AI Visibility Check looks at one page. A full audit needs a crawl, data analysis and experience in interpreting what matters.

How often should a technical SEO audit be repeated?

A full audit once a year is common, with lighter checks after redesigns, migrations or large content changes.

Will an audit guarantee better rankings?

No. It removes obstacles and shows where to focus. Rankings also depend on content, authority and competition.