SEO in 2025: Technical Optimisation That Works
Content is king, but technology is the castle where the king lives. Without a solid technical foundation, even the best content has no chance in Google. These are the factors that really count.
Why Technical SEO Is the Foundation of Everything
Without technology, no findability — no matter how good your content is.
Many companies focus on content when it comes to SEO. And rightly so — good content is essential. But what is the point of writing beautiful articles if Google cannot find them, cannot read them or does not want to index them? Technical SEO is the foundation on which everything stands.
In 2025, technical SEO is more important than ever. Google sets increasingly high demands on loading speed, mobile usability, Core Web Vitals and structured data. Websites that are not technically sound are simply ranked lower — regardless of content quality.
In this article, we cover the technical factors that have the biggest impact on your Google positions. No vague advice, but concrete points you can tackle directly.
- Technical SEO is the foundation of your findability
- Google sets increasingly high demands on website performance
- Concrete points you can tackle directly
Loading Speed: Every Millisecond Counts
A slow website loses visitors and positions.
Loading speed is one of the most important ranking factors in Google. Research shows that 53% of mobile visitors leave a website if loading takes longer than 3 seconds. Google takes this into account when determining your position.
But loading speed is not only important for SEO — it is also crucial for conversion. Every second of delay costs you 7% conversion. For a webshop with thousands of visitors per month, that is a significant amount.
What can you do? Optimise images, use server-side caching, minimise CSS and JavaScript, and choose a fast hosting provider. We use SSD servers, server-side caching and optimised code to keep loading times under 2 seconds. That is the standard Google rewards.
- 53% of mobile visitors leave slow websites
- Every second of delay costs 7% conversion
- SSD servers, caching and optimised code are essential
Core Web Vitals: What Google Measures
Three metrics that determine whether your website meets the requirements.
Core Web Vitals are three metrics Google uses to assess the user experience of your website. LCP (Largest Contentful Paint) measures how quickly the main content appears. FID (First Input Delay) measures how quickly the website responds to interaction. CLS (Cumulative Layout Shift) measures whether elements shift unexpectedly.
These three metrics are an official ranking factor. Websites that do not meet the standards are ranked lower than websites that do — even if the content is better.
The good news: most Core Web Vitals issues are solvable. By optimising images, minimising JavaScript and defining elements with fixed dimensions, you can significantly improve your scores. We test every website we build against Core Web Vitals standards.
- LCP: main content must appear within 2.5 seconds
- FID: website must respond within 100ms to interaction
- CLS: elements must not shift unexpectedly
Schema Markup: Give Google Context
Structured data makes your search result richer and more noticeable.
Schema markup — also known as structured data — is code you add to your website to tell Google what your content means. A product page is recognised as a product with price, stock and reviews. An article is recognised as an article with author and publication date.
The advantage of schema markup is that your search result is enriched with extra information: star ratings, prices, availability, FAQ answers directly in Google. These enriched results stand out more, attract more clicks and lead to more traffic — without needing a higher position.
We implement schema markup as standard on every website we build. From product schema and article schema to organisation schema and breadcrumb schema. It is a small investment with a big return.
- Enriched search results with stars, prices and more
- More noticeable results lead to more clicks
- Implemented as standard on all our websites
Mobile First: Google Assesses Your Mobile Version
Since mobile first indexing, Google assesses your mobile version.
Since Google switched to mobile first indexing, it assesses your website based on the mobile version. Not the desktop version. That means your mobile website must be just as fast, complete and user-friendly as your desktop version.
This has major implications. Content that is visible on desktop but hidden on mobile may not be included by Google. Navigation elements that do not work on mobile can affect your crawlability. And loading times that are acceptable on desktop may be too long on mobile.
We build every website mobile first. That means the design starts on mobile and is then scaled up to desktop. The result: a website that performs excellently on every device and is rewarded by Google.
- Google assesses your website based on the mobile version
- Content must be as accessible on mobile as on desktop
- Mobile first design is the standard at Speedy Systems
Frequently Asked Questions About Technical SEO
Answers to questions we often receive.
How do I check the technical SEO of my website?
There are several free tools available. Google Search Console provides insight into indexing and Core Web Vitals. Google PageSpeed Insights measures your loading speed. For a thorough analysis, we recommend a professional SEO audit.
How long until technical SEO improvements deliver results?
Technical improvements are usually picked up by Google within a few days to weeks. The full impact on your positions is visible within 4 to 8 weeks, depending on the size of your website.
Is technical SEO more important than content?
No, they are complementary factors. Technical SEO ensures Google can find and assess your content. Content ensures Google finds your website worth ranking highly. Both are essential.
Can I do technical SEO myself?
Basics like adding meta descriptions and optimising images you can do yourself. For more complex matters like Core Web Vitals optimisation, schema markup and server-side caching, we recommend professional help.
Related Services
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