A website can have useful content and still struggle in search results if technical problems make it difficult to crawl, understand, or use.
Technical SEO does not always require complex development work, but professional SEO services can help identify problems that are difficult to diagnose. Some issues are simple to fix, while others need a structured review from a developer or SEO professional.
Here are common technical SEO issues that can affect a business website.
1. Slow Page Speed
Slow pages can create a poor experience for visitors.
Common causes include:
Large images
Too many scripts
Unnecessary plugins
Poor hosting
Unoptimised fonts
Heavy videos
Bloated themes
Check your most important pages first, including the homepage, service pages, contact page, and high-traffic blog articles.
2. Poor Mobile Usability
A website should be easy to use on a phone.
Check that:
Text is readable
Buttons are easy to tap
Menus work properly
Forms fit the screen
Images do not overflow
Visitors do not need to zoom in
Pages do not require horizontal scrolling
A website that is difficult to use on mobile can lose both visitors and enquiries.
3. Indexing Problems
Indexing allows search engines to store and display your pages in search results.
Pages may fail to appear because of:
- Noindex settings
- Incorrect robots.txt rules
- Crawl errors
- Canonical problems
- Website migrations
- Accidental page restrictions
- Duplicate or low-value pages
Review important service pages and blog articles regularly, especially after a redesign or technical update. If you are rebuilding the site, use this website redesign checklist before making major changes.
4. Broken Links
Broken internal links lead visitors to pages that no longer exist.
They can appear after:
Changing a URL
Deleting a page
Moving content
Updating navigation
Importing content
Changing a website structure
Review links on important pages and use redirects when a useful URL has been replaced.
5. Incorrect Redirects
Redirects help send visitors and search engines from an old URL to a relevant new URL.
Problems can occur when:
A redirect points to the wrong page
Several redirects happen in a chain
An old page redirects to an unrelated page
A page redirects to the homepage without a clear reason
Important redirects are missing
Redirects should be planned carefully during website changes.
6. Duplicate Content
Duplicate content can make it difficult for search engines to decide which page should appear.
It can occur through:
Similar service pages
Repeated location pages
Multiple URL versions
Filtered pages
Printer-friendly versions
Copied blog content
HTTP and HTTPS versions
The solution may involve rewriting, consolidating, redirecting, or using a canonical tag where appropriate.
7. Missing or Incorrect XML Sitemap
An XML sitemap helps search engines discover important URLs.
Check that the sitemap:
Exists
Can be accessed
Includes important pages
Does not include deleted pages
Does not include blocked pages
Is submitted in Search Console
A sitemap does not guarantee rankings, but it supports better discovery and monitoring.
8. Weak Website Security
Your website should use HTTPS and keep its platform, plugins, and tools updated.
Security problems can affect trust, functionality, and search visibility. Use reliable hosting, regular backups, strong passwords, and a clear update process.
9. Missing Structured Data
Structured data helps provide additional information about a page to search engines.
Depending on the page, this may include information about:
Articles
FAQs
Organisations
Services
Products
Reviews
Events
Structured data must match the visible content on the page. It should not be added simply to display information that visitors cannot see.
10. Poor Website Architecture
A website should have a logical structure.
Important pages should not be buried under unnecessary layers of navigation. Related services, blogs, and resources should be connected through useful internal links.
A clear structure helps visitors find information and helps search engines understand the relationship between pages.
How to Fix Technical SEO Issues
Start with the problems that affect important pages and real users. A structured SEO audit can help you prioritise these issues.
A sensible order is:
- Fix indexing and access problems.
- Repair broken links and redirects.
- Improve mobile usability.
- Improve speed.
- Review duplicate content.
- Check sitemap and structured data settings.
- Improve the wider website structure.
- Monitor the results.
Do not make large technical changes without a backup and a testing plan.
Frequently Asked Questions
What is technical SEO?
Technical SEO is the process of improving the technical parts of a website so search engines can access, understand, and display its pages more effectively.
What are the most common technical SEO issues?
Common issues include slow pages, poor mobile usability, indexing problems, broken links, incorrect redirects, duplicate content, security problems, and unclear website structure.
Can technical SEO improve rankings?
Fixing technical problems can help search engines access and understand your content. Rankings also depend on content quality, relevance, competition, authority, and user experience.
Does every technical SEO issue need a developer?
No. Some issues can be fixed through a content management system or SEO platform. More complex problems may require development support.
Need Help Fixing Technical SEO Problems?
Technical SEO problems can be difficult to identify when you are focused on running your business. Vissi can review your website’s technical foundation and help prioritise the improvements that matter through our SEO Services.
