The Importance of Technical SEO: Common Issues and How to Fix Them

Brett Steenkamp • October 29, 2026

Why Technical SEO Matters for Your Business

You can publish valuable content, build quality backlinks and invest in digital marketing, but if search engines struggle to access or understand your website, your SEO efforts may not deliver their full potential.


Technical SEO focuses on the foundations that help search engines discover, crawl, interpret and index your website. It also considers aspects of website performance and usability that affect how visitors experience your pages.



For businesses competing in the UK market, technical SEO is an important part of building sustainable organic visibility. It helps ensure that your website is accessible to search engines, easy to navigate and capable of supporting your wider digital marketing strategy.

What Is Technical SEO?

Technical SEO involves optimising the behind-the-scenes elements of a website so search engines can process its content effectively.


While on-page SEO focuses on content, headings and keywords, technical SEO looks at the infrastructure supporting that content.


Key areas include:

  • Crawlability: Can search engines access your important pages?
  • Indexability: Can those pages be considered for inclusion in search results?
  • Website speed: Do pages load efficiently for visitors?
  • Mobile usability: Does your website work well across different screen sizes?
  • Site architecture: Can users and search engines navigate your content logically?
  • Security: Does your website use HTTPS?
  • Structured data: Can search engines interpret additional information about your pages?


These elements work together to create a stronger technical foundation for organic search performance.


Common Technical SEO Issues That Can Affect Performance



1. Pages That Cannot Be Crawled or Indexed

One of the first things to check is whether search engines can access the pages that matter to your business.


Incorrect robots.txt rules, unintended noindex directives or technical configuration issues can prevent important pages from appearing in search results.


How to address it: Use Google Search Console to review page indexing reports and investigate affected URLs. Check that important pages are accessible, indexable and linked appropriately from other pages on your website.


2. Slow Website Performance

Slow-loading pages can frustrate visitors, particularly when they are browsing on mobile devices or using less reliable connections.


Google's Core Web Vitals provide useful measures of real-world page experience:

  • Largest Contentful Paint (LCP): Measures how quickly the main content loads.
  • Interaction to Next Paint (INP): Measures responsiveness to user interactions.
  • Cumulative Layout Shift (CLS): Measures unexpected visual movement during loading.


Google's current good-performance thresholds are LCP of 2.5 seconds or less, INP of 200 milliseconds or less, and CLS of 0.1 or less, assessed at the 75th percentile of page visits.


How to address it: Use PageSpeed Insights to identify opportunities such as compressing images, reducing unnecessary JavaScript, improving server response times and stabilising page layouts.


3. Poor Mobile Usability

A website may look impressive on a desktop but become difficult to use on a mobile device.


Small text, awkward navigation, overlapping elements and forms that are difficult to complete can all create unnecessary friction.


How to address it: Test key pages on different screen sizes. Prioritise readable typography, accessible navigation, responsive layouts and forms that are easy to complete on mobile.


4. Broken Links and Incorrect Redirects

Broken internal links, redirect chains and outdated URLs can create poor user experiences and make site maintenance more difficult.


These issues commonly appear after website redesigns, changes to page structures or the removal of older content.


How to address it: Crawl your website regularly, identify broken internal links and ensure redirects point to the most relevant replacement pages. When changing URLs, use appropriate permanent redirects where applicable.


5. Duplicate Content and Canonicalisation Problems

Similar or duplicated URLs can make it harder for search engines to determine which version of a page should be treated as the primary one.


This can happen through inconsistent URL formats, tracking parameters, duplicated product pages or incorrect canonical tags.


How to address it: Review canonical tags, URL consistency and duplicate pages. Where appropriate, consolidate competing versions and ensure internal links point to the preferred URL.


6. Missing or Incorrect Structured Data

Structured data helps search engines interpret specific information about a page, such as an organisation, product, article or service.


Incorrect implementation can prevent eligible pages from qualifying for certain enhanced search results.


How to address it: Use relevant Schema.org structured data, follow Google's documentation and validate your implementation with the Rich Results Test where applicable. Structured data does not guarantee enhanced search appearances.


How to Conduct a Technical SEO Audit

A technical SEO audit helps identify issues, establish priorities and create a practical improvement plan.


A structured approach should include:

  1. Review Google Search Console. Investigate indexing problems, search performance and reported page issues.
  2. Crawl the website. Use an SEO crawler to identify broken links, redirect chains, duplicate titles and other technical problems.
  3. Test page performance. Review Core Web Vitals and mobile performance on important pages.
  4. Check site architecture. Ensure key pages are accessible through logical navigation and internal links.
  5. Review on-page foundations. Check title tags, meta descriptions, headings and canonical tags.
  6. Validate structured data. Confirm that relevant markup is implemented correctly.
  7. Prioritise fixes. Address problems that affect important pages, prevent indexing or create significant usability issues first.
  8. Measure the impact. Recheck the affected pages and monitor performance after changes have been implemented.


An audit is most useful when findings are translated into clear actions rather than simply presented as a list of errors.


How Technical SEO Supports Business Growth

Technical SEO is not just about satisfying search engines. It helps create a website that supports the wider customer journey.


When visitors can access pages easily, navigate the site and find relevant information, they have a clearer route towards making an enquiry or purchase.


A technically sound website also gives content marketing, paid advertising and conversion optimisation a stronger foundation.


However, technical improvements alone cannot guarantee higher rankings or more leads. Results also depend on content relevance, competition, authority, user intent and the overall quality of your website.


How Primeria Can Help

At Primeria, we approach SEO as part of a wider digital marketing strategy.

Technical performance, content relevance and user experience all contribute to how effectively a website supports business objectives.


Our SEO approach can help businesses identify technical barriers, improve website structure and align optimisation with broader goals such as organic visibility, lead generation and conversions.


By combining technical analysis with strategic marketing, businesses can make more informed decisions about where to invest their time and resources.


Build a Stronger Foundation for SEO

Technical SEO provides the foundation on which other search optimisation efforts depend.

From crawlability and indexing to page speed, mobile usability and structured data, addressing technical issues helps your website serve both search engines and visitors more effectively.


If your website is underperforming in organic search, a technical SEO audit can help identify what needs attention and where improvements should begin.


Ready to strengthen your website's SEO performance?


Get in touch today to explore how a strategic approach to technical SEO can support your digital marketing goals.

Contact us today on 
(+44) 203 989 6007 for a free consultation.

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