Tools & Services

Optimise Core Web Vitals: The 5 Most Important Steps to Improve Your Website

Vincent Kilchherr December 19, 2025 6 min read

Discover how optimising Core Web Vitals can improve your website's performance and search rankings.

Introduction

In today's digital age, optimising Core Web Vitals is essential for the success of a website. These metrics are crucial for search engine rankings and directly influence the user experience. An optimised website results in more satisfied users and a higher conversion rate. In this post you'll discover how to improve your website's Core Web Vitals in five straightforward steps to take your business to the next level. Specific tools and services are presented that can help you optimise for the Swiss market, including local providers such as Cyon and Hostpoint.

The Problem

Website operators face the ongoing challenge of optimising the user experience in order to remain competitive. Core Web Vitals are a key component of this. These metrics cover crucial aspects of web performance that are central to the user experience.

Challenges in Optimisation

  • Loading speed: Slow loading times lead to higher bounce rates. A fast loading time is particularly critical for mobile users to retain visitors. Studies show that a delay of just one second can reduce the conversion rate by up to 7%.
  • Interactivity: Delays in interactivity — such as slow responses to user input — can increase user frustration and reduce engagement. This is especially critical for interactive elements such as forms or chat widgets.
  • Visual stability: Layout shifts that occur when content moves during loading significantly impair the user experience. Unexpected layout changes can lead to accidental clicks and deter users.
  • Mobile optimisation: Neglecting mobile users causes potential traffic loss. Since mobile traffic frequently surpasses desktop traffic, this is a critical issue. Estimates suggest that over 50% of users visit websites via mobile devices.

The Solution

Optimising your website's Core Web Vitals requires several approaches, ranging from technical adjustments to the implementation of specialised tools.

1. Improve Loading Speed

  • Remove unnecessary scripts and compress images to reduce loading times. Tools such as TinyPNG or ImageOptim can be used for this.
  • Implement a Content Delivery Network (CDN), such as Cloudflare, to bring your content geographically closer to users and thus reduce loading times. A CDN reduces latency and improves loading times especially for international users.
  • Optimise caching strategies using plugins such as WP Super Cache for WordPress. These plugins store cached versions of your pages to reduce loading times on repeat visits.
  • Ensure your server is fast and reliable — for example by using Hostpoint or Cyon, which offer high-performance hosting solutions in Switzerland. These providers offer optimised server configurations for better performance.

function optimizeImages(images) {
  images.forEach(image => {
    // Example code for image compression
    compressImage(image);
  });
}

2. Increase Interactivity

  • Minimise JavaScript and optimise rendering paths to reduce the time the browser needs to make the page interactive. Tools such as Webpack can help bundle and minify JavaScript files.
  • Use tools like Google Lighthouse to identify improvement opportunities and address them in a targeted manner. Lighthouse provides detailed reports and suggestions for improving interactivity.
  • Implement asynchronous loading of scripts to speed up interactivity. This ensures the main page loads quickly while non-critical scripts are loaded in the background.

3. Ensure Visual Stability

  • Avoid layout shifts by specifying fixed dimensions for images and other media content. This prevents content from moving when elements load.
  • Preload fonts to ensure visual consistency. Use font-display: swap in CSS to ensure fast font loading and avoid a Flash of Unstyled Text (FOUT).
  • Use CSS Grid and Flexbox to ensure a stable layout and handle dynamic content elegantly. These modern CSS techniques allow you to design your web page layout flexibly and stably.

4. Mobile Optimisation

  • Use responsive design strategies to improve accessibility on mobile devices. CSS frameworks such as Bootstrap or Foundation can be helpful here.
  • Test mobile performance with tools like Google Search Console and the Mobile-Friendly Test to ensure your website works well on smartphones and tablets.
  • Implement mobile-optimised payment options such as Twint and PostFinance to simplify the checkout process for Swiss users.
  • Create AMP pages (Accelerated Mobile Pages) to reduce loading times on mobile devices and improve the user experience.

5. Monitoring and Continuous Improvement

  • Use PageSpeed Insights to monitor your website's performance and make targeted changes. This helps you continuously work on improving your Core Web Vitals.
  • Use WatchSite.ch for regular performance notifications about your website and to respond quickly to issues.
  • Implement regular security updates and GDPR-compliant data protection practices to ensure the protection of user data. Regular updates help close security vulnerabilities and keep the website stable.
  • Deploy tools such as New Relic or Dynatrace to gain deeper insights into your website's performance and usage statistics.

Added Value

Optimising Core Web Vitals offers numerous benefits that directly affect the success of your website:

  • An improved user experience leads to longer dwell times on the website, which in turn increases the likelihood of conversions.
  • Higher search engine rankings increase your website's visibility and attract more organic traffic.
  • A higher conversion rate through faster loading times and better interactivity. Users are more inclined to stay on a fast and responsive website.
  • A reduced bounce rate through stable and mobile-friendly pages, leading to a better user experience.
  • Increased customer satisfaction through an optimised and continuously improved web presence, which can directly impact revenue.
  • Long-term savings through reduced server load and fewer support requests thanks to a more robust website.

Practical Example

A Swiss company that has benefited from optimising its Core Web Vitals is a local online shop from Zurich. By implementing a CDN and optimising the mobile user experience, the shop was able to increase its conversion rate by 25%. The shop used the Swiss provider Cyon for web hosting to maximise server speed. Additionally, Twint was integrated as a payment option to simplify the checkout process for Swiss customers. These optimisations led to a significant reduction in the bounce rate and an improvement in customer satisfaction, which ultimately boosted revenue.

Conclusion

Optimising Core Web Vitals is an essential step to improving your website's performance and generating more leads. By implementing the steps outlined above and avoiding common mistakes, you're well on your way to strengthening your online presence and remaining competitive. Should you need professional support, I'm happy to assist as a web developer based in Basel to optimise your website's user experience.

Ready for Your Project?

As a web developer based in Basel, I'm happy to help you optimise your Core Web Vitals. Contact me for a free initial consultation.

Request a free quote now

Or get in touch directly:
📧 hallo@webaufbau.ch
📞 +41 78 870 84 62

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Vincent Kilchherr
Vincent Kilchherr

Fullstack & AI Entwickler

Informatiker EFZ Applikationsentwicklung mit Berufsmaturität - Informatikmittelschule Basel (IMS)

Get in touch

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