A website can look credible, explain your services clearly and still fail to generate the calls, bookings or enquiries it should. Often, the barrier is not the wording on the page. It is a technical issue stopping search engines from finding, understanding or confidently ranking the site. This technical SEO audit guide explains how to identify those issues and decide what to fix first.
For a local business, school, manufacturer or professional firm, a technical audit is not about chasing a perfect score in a software tool. It is about removing obstacles between a prospective customer’s search and the action you want them to take: calling, requesting a quote, arranging a visit, making a purchase or submitting an application.
Start with the pages that matter commercially
Before reviewing reports, establish which pages have a direct role in growth. These commonly include core service pages, location pages, product or category pages, contact pages and key landing pages used in advertising. A school may also prioritise admissions and prospectus pages, while a hospitality venue may focus on booking, menu and event pages.
This matters because technical SEO work needs prioritising. A broken filter page with no search value is rarely as urgent as a slow, poorly indexed service page that should be bringing in local enquiries. Gather current rankings, organic traffic, conversion data and search visibility where available. The aim is to link every meaningful finding to a commercial page or user journey.
Check whether search engines can crawl and index the site
A page cannot rank reliably if search engines cannot access it or have been instructed not to include it in their results. Crawlability and indexability are the first checks in any technical SEO audit.
Review crawl restrictions and page directives
Your website’s robots.txt file can prevent search engines from crawling areas of the site. That can be useful for private account sections, internal search results or low-value system pages. It becomes a problem when important service, product or location pages are blocked by mistake.
Also check page-level noindex directives. These tell search engines not to index a page. They are commonly left behind after a staging site, redesign or website migration. A page may look live to visitors but remain absent from Google because it carries a noindex setting.
Compare your sitemap with the live website
An XML sitemap should help search engines discover the canonical pages you want to rank. It should not be full of redirected URLs, error pages, duplicate variations or pages that are intentionally noindexed.
Review whether the sitemap includes your priority pages and whether those pages return a successful status code. For growing websites, especially Shopify, WordPress or large catalogue sites, this simple check can reveal that important new pages are not being surfaced correctly.
Investigate index coverage issues
Search Console can show pages that are excluded, crawled but not indexed, discovered but not indexed or affected by other indexing errors. Each status needs interpretation. Not every excluded page is an issue, but a pattern affecting valuable pages needs attention.
For example, a new service page may be technically available but too similar to another page, weakly linked from the wider site or poorly structured. The solution may be improved internal links and stronger page content, rather than simply asking for reindexing.
Test mobile performance and page experience
Most local searches take place on a mobile phone, often when a customer needs an immediate answer. If your site is difficult to use on a smaller screen, slow to load or awkward to contact, visibility and conversion can both suffer.
Check core pages on real devices as well as using performance tools. Can someone find a phone number without scrolling? Does the enquiry form work properly? Are maps, menus, booking tools and downloadable documents usable? A technically sound page that creates friction for a real visitor still needs work.
Performance should be assessed page by page. Large uncompressed imagery, excessive scripts, third-party tracking tags, video backgrounds and poorly configured themes are common causes of slow loading. The right fix depends on the platform and the page’s purpose. A carefully compressed project gallery may be worth retaining for a high-value construction or manufacturing page, while a decorative homepage video may add little commercial value.
Pay particular attention to Core Web Vitals, including loading speed, visual stability and responsiveness to interaction. These measures are useful indicators, but do not treat them in isolation. A faster website that removes essential booking functionality or key trust signals is not automatically a better website.
Find broken journeys, redirects and server errors
Technical faults can quietly waste the authority your website has built over time. They also create a poor experience for people who arrive from search, adverts, bookmarked pages or printed materials.
A crawl of the website will identify broken internal links, missing images, 404 pages and chains of redirects. Fix internal links so they point directly to the live destination. Redirects are useful when an old URL has moved, but multiple hops can slow crawling and make site maintenance harder.
Check for server errors too. A 5xx error means the server could not fulfil a request. If it affects key pages intermittently, visitors may leave and search engines may reduce crawling until the issue is resolved. Hosting quality, plugin conflicts, overloaded databases and poorly maintained software can all be factors.
For websites that have been redesigned or moved to a new platform, review historic URLs carefully. A missing redirect from an old service page, brochure page or product page can mean losing years of links and search equity. Migrations are one area where professional planning is usually less costly than repairing lost visibility afterwards.
Resolve duplicate content and canonical signals
Search engines need clear signals about which version of a page is the main one. Duplicate content can occur naturally through URL parameters, category filters, product variants, printer-friendly pages, HTTP and HTTPS versions, or inconsistent trailing slashes.
Canonical tags help nominate the preferred version. They should normally point to the main, indexable page, not to a redirected page, an error page or a URL blocked from crawling. Canonicals are a hint rather than a guarantee, so they work best alongside a consistent internal linking structure, clean sitemap and correct redirects.
Ecommerce websites need extra care here. Product filters and sorting options can create thousands of URL variations. Some may be valuable for users, but few need to be indexed. The goal is not to remove useful functionality. It is to avoid asking search engines to crawl and assess endless versions of the same catalogue.
Strengthen site structure and internal linking
A well-organised website makes it easier for visitors to move from interest to enquiry and for search engines to understand which pages matter. Important pages should be reachable through logical navigation and contextual internal links, rather than buried several clicks from the homepage.
Use descriptive anchor text where it helps users. A link labelled “boiler servicing in Leeds” gives clearer context than “read more”. However, forced repetition looks unnatural and does little for trust. Internal linking should reflect the way customers research: from a broad service, to a specific solution, to evidence of experience, then to a clear contact route.
For organisations serving several areas, avoid creating near-identical location pages with only the town name changed. Build local pages only where you can provide relevant services, case studies, coverage details, testimonials or practical local information. Quality is more sustainable than producing dozens of thin pages.
Check structured data, security and accessibility basics
Structured data can help search engines interpret information such as your business details, products, reviews, events or FAQs. It must match what appears visibly on the page and should be tested for errors. Incorrect markup will not create trust, and misleading review or location data can create avoidable problems.
Security is equally practical. Ensure the entire website uses HTTPS, that mixed-content warnings are resolved and that software, plugins and themes are maintained. For schools, healthcare providers and professional firms handling sensitive data, secure forms and clear data handling are particularly important.
Accessibility overlaps with technical quality. Headings should follow a sensible hierarchy, images need meaningful alternative text where relevant, forms need clear labels and keyboard users must be able to complete essential tasks. These improvements support a wider audience and frequently make pages easier for search engines to interpret too.
Turn findings into a workable action plan
The value of an audit comes from what happens next. Group findings by impact, effort and risk. Urgent issues usually include pages blocked from indexing, widespread server errors, broken conversion forms, security warnings and lost redirects. Next come improvements to speed, duplication, internal linking and page templates. Lower-priority refinements can follow once the foundations are dependable.
Assign an owner and a deadline to every action. Some fixes sit with a web developer, while others require content, marketing or operations input. After changes are released, test them again. Confirm that pages load, forms send notifications, redirects work, tracking records conversions and indexing signals are correct.
A technical audit should become part of regular website care, not a one-off event after rankings fall. Websites evolve with new services, staff, plugins, products and campaigns. Keeping the technical foundations in good order gives every future marketing effort a stronger place to land, and gives potential customers fewer reasons to choose a competitor.