What is technical SEO?
Technical SEO is everything search engines need to read, understand and display your website properly. It is the foundation under your visibility: the best content will not perform on a website that loads slowly, crawls poorly or sends the wrong signals.
That is why every SEO programme at TNG starts with the technical side. Only when the foundation is solid can content and link building do their work.
Crawlability and indexation
Search engines must be able to find and include all your important pages. We ensure a clean site structure, correct canonicals and a well-considered robots.txt.
Site speed and Core Web Vitals
A slow website costs rankings and conversions. We optimise for the metrics Google actually steers on.
Internal link structure
Smart internal links distribute authority across your site and show search engines which pages matter most.
Structured data and schema markup
The technical language that helps search engines and AI models interpret your content correctly. Also the foundation under GEO.
Technical SEO audit: how we find what goes wrong
Every collaboration starts with a technical SEO analysis of your full website. Not a standard tool export, but an audit by a specialist who knows which findings have impact and which are noise.
Full crawl analysis
We crawl your site the way Google does and find broken links, redirect chains, duplicate content and indexation issues.
Performance measurement
Site speed and Core Web Vitals per page type, on desktop and mobile, with the causes included.
Indexation check
What is and is not in the index, and does that match what you want? Orphaned pages and wasted crawl budget surface here.
Prioritised action list
You do not get a laundry list but a ranked plan: what we fix first and what it delivers.
The most common technical SEO mistakes
After hundreds of audits we see the same technical SEO mistakes come back again and again. Each one costs rankings, and each one can be fixed.
Slow load times
Oversized images, unnecessary scripts and missing caching. Often the fastest win of the whole programme.
Duplicate content without canonicals
The same content on multiple URLs forces search engines to choose, and that choice rarely lands well.
Redirect chains and 404s
Every extra hop leaks authority and wastes crawl budget.
Missing structured data
Without schema markup you leave rich results and AI visibility to competitors who do use it.
Blocks in robots.txt or noindex
Surprisingly often, important pages are accidentally locked away. A small mistake with big consequences.
Technical SEO optimisation per platform
Every platform has its own technical pitfalls, and generic advice does not cut it. Our specialists know the stacks from the inside: from Shopify and WordPress to Framer and headless custom builds.
Shopify
Apps pile scripts on top of each other and slow your store down. We clean up the app load, optimise theme templates and keep your Core Web Vitals green.
WordPress and WooCommerce
Plugin sprawl, slow themes and database bloat, fixed without breaking your site.
Headless and custom builds
Rendering, caching strategy and structured data directly in the code, in close collaboration with your developers.
Framer and no-code
Fast out of the box, but indexing and schema markup require manual work. We set it up properly from day one.
Large webshops
Crawl budget, faceted navigation and duplicate content under control, even with thousands of products and filters.
International websites
Hreflang, language versions and canonicals correct for every market, so the right page ranks in the right country.
From technical SEO audit to results: how we work
An audit is only the beginning. The difference is in the execution: technical SEO optimisation in the right order, with measurable impact on rankings and traffic.
Step 1. Audit and priorities
A full technical SEO analysis with a ranked plan: what we fix first and what it delivers.
Step 2. Quick wins within 30 days
Indexing blocks, speed issues and broken links come first, for fast visible impact.
Step 3. Structural optimisation
Site structure, structured data and templates improved in sprints, by us or together with your developer.
Step 4. Monitoring and safeguarding
Ongoing monitoring of Core Web Vitals, indexing and errors, so technology never becomes the bottleneck again.
Outsourcing technical SEO to TNG
Technical SEO requires specialist knowledge that is rarely available in-house. Our specialists implement the improvements themselves or prepare them in clear priority order for your developer, whichever you prefer.
Technical SEO works best as part of a full programme with content and authority. Read how outsourcing SEO works with us, or explore our broader SEO approach.
Audit, implementation and monitoring
From first analysis to ongoing monitoring of your technical health.
Together with your developer
We speak the language of development and deliver changes that are directly actionable.
Measurable results
We connect every technical improvement to its effect on rankings, traffic and Core Web Vitals.
A selection of our clients
View our full portfolio
Cases
Results with Technical SEO
De website van Villa Bloom, een tweetalige kinderopvang in Den Haag en Voorburg, was online nauwelijks vindbaar. Strategische pagina's scoorden niet in Google door een lage domeinautoriteit, een gebrekkige technische structuur en het ontbreken van een contentstrategie. Zonder die basis heeft iedere optimalisatie weinig effect.
Villa Bloom
In a competitive, international market, Beans App needed to attract high-quality, active users rather than just app installs. This required a scalable strategy that makes optimal use of ecosystem partners. Because of strict platform rules on channels such as TikTok, specific platform expertise, creativity and patience were crucial for successful scaling.
Beans
Glaskoning wanted to take their marketing to the next level with impactful content. The ads didn't stand out enough and organic growth was stagnating. The ambition was a powerful combination of visual 'stopping power' in ads and a dominant SEO position. The goal: more visibility, higher authority and structural growth in profitable traffic.
Glaskoning
Insights
