How is it different from other SEO?

Content and link-building focus on what you say and who links to you. Technical SEO focuses on how the site is built–so search engines can find and interpret your pages correctly.

Can technical SEO fix a slow site?

Often yes. Speed is part of technical SEO. Caching, image optimisation, clean code and good hosting all contribute. An audit can identify the main bottlenecks.

Do I need technical SEO if I use WordPress or Shopify?

Yes. Both platforms can be set up well or poorly. Technical SEO covers how your theme, plugins, hosting and configuration affect crawlability, speed and indexing.

What is technical SEO?

Q: What is technical SEO?

Technical SEO is the work that makes your site crawlable, indexable and fast enough for search engines to understand and rank it–things like site structure, speed, mobile-friendliness and security.

Technical SEO is about making sure your website is built so search engines can find, understand, and index it. If your site is the house, technical SEO is the foundations and wiring. These are the parts visitors don’t see but rely on.

Why it matters

Technical SEO affects:

How fast your site loads
Whether Google can crawl and index your pages
How accessible your site is to all users
How secure your site appears
Whether your site passes Core Web Vitals
Your ranking potential

Without solid technical foundations, even strong content struggles to perform.

The main areas

Performance and speed: Your site must load quickly, especially on mobile. Speed matters for user experience, SEO, and conversion rates.
Core Web Vitals: Google’s measure of real-world experience: how fast the main content loads (LCP), how responsive the site feels (INP), and how stable the layout is (CLS).
Crawlability and indexing: Search engines must be able to reach and store your pages. That depends on clean links, logical structure, sitemaps, and sensible robots.txt use.
Structure and navigation: Clear hierarchy, internal linking, and simple URLs help both visitors and search engines understand your site.
Security: HTTPS, firewalls, and up-to-date software. Search engines and users prefer secure sites.
Accessibility: Alt text, contrast, keyboard navigation. When your site works for more people, it also helps machines understand it.

Technical vs on-page vs content SEO

Technical SEO – Infrastructure, speed, structure, crawlability.
On-page SEO – Page-specific optimisation: titles, meta tags, headings, keywords.
Content SEO – The content itself: blog posts, guides, service copy.

All three support each other. Technical SEO is the base layer.

WordPress vs Shopify

WordPress

Technical SEO depends heavily on hosting, theme, plugins, caching, and image optimisation. Hosting makes a big difference. See how hosting affects speed.

Shopify

CDN, HTTPS, and server optimisation are handled for you. You still need a good theme, optimised images, and clear structure.

Common problems technical SEO fixes

Slow site speed
Poor mobile performance
Pages not being indexed
404 errors and redirect chains
Layout shift and janky loading
Bloated code and large images
Security warnings

If your site “just doesn’t rank” and content looks fine, technical SEO is often the missing piece.

For next steps, see Website speed, Core Web Vitals, or start with a website audit.

Want crawl, index, or structure issues fixed? Explore SEO foundations →