Google PageSpeed optimisation: the ABC
Google PageSpeed optimisation: how to test your website with PageSpeed Insights and work through the key recommendations for desktop and mobile.
SEO & Growth
PageSpeed optimisation: faster websites and better Core Web Vitals
Faster websites and shops: measurement with lab and field data, then images, scripts, fonts and server in order of their impact.
- since 2012
- 200+ online shops
- 800+ websites
- Shopware Partner since 2014
Online shops
200+
delivered since 2012
Projects delivered
1000+
since 2012
Websites
800+
delivered since 2012
2012 founded
200+ online shops
800+ websites
19 experts in our team
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Shopware Partner since 2014 -
Mollie Partner since 2021 -
Trusted Shops Partner -
eRecht24 Partner -
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Base Partner since 2026 -
sync4 Partner since 2022 -
Pickware Partner since 2019 -
Why PageSpeed optimisation is about more than a good score
A poor PageSpeed score tells you that something is slowing things down, but not what. Often it is large images, tracking and chat scripts, fonts from external servers or a slow server response. If you only optimise for the score, you often improve the measurement rather than the page.
What PageSpeed optimisation does for you
- Main content and images appear faster (LCP).
- The page responds to clicks and input without long delays (INP).
- Layouts no longer jump while loading (CLS).
- Field data shows whether the improvement reaches real visitors.
Scope of services
What our PageSpeed optimisation covers
- Measurement
With PageSpeed Insights, Lighthouse and real user data.
- Images
AVIF or WebP in suitable sizes, with lazy loading.
- CSS and JavaScript
Whatever blocks loading is reduced.
- Third-party scripts
We review tracking, widgets and the consent solution.
- Fonts
Hosted locally and preloaded selectively.
- Server and cache
Caching, compression and a fast server response.
In PageSpeed optimisation we improve the loading time of websites and online shops and the Core Web Vitals that Google evaluates as a page experience signal. We measure with lab and field data, find the causes in images, scripts, fonts and server, and solve whatever brings the most benefit first. For Shopware shops there is a separate page on Shopware performance.
Tech stack
- ApplicationShopware, Laravel or WordPress with theme and plugins
- Cache and searchRedis and Elasticsearch configured to fit
- PHPcurrent version with OPcache
- Serverour own servers with NVMe storage
The three Core Web Vitals
LCP (Largest Contentful Paint) measures when the largest visible element has loaded, usually an image or a heading. INP (Interaction to Next Paint) shows how quickly the page responds to clicks and input. CLS (Cumulative Layout Shift) records how much the layout shifts while loading. Each value has different causes, so we measure them separately.
Search result
Examplewww.web-labels.de › en › seo-growth › pagespeed-optimisation
PageSpeed Optimisation and Core Web Vitals | Web Labels
PageSpeed optimisation by Web Labels: faster loading and better Core Web Vitals (LCP, INP, CLS) via measurement, optimised images, leaner code and fast servers.
Typical bottlenecks and what we do
We deliver images as AVIF or WebP in the size the device needs. Tracking, chat and advertising scripts load later or only after consent. We host fonts locally instead of fetching them from third-party servers. On the server side we check caching, compression and response time. If the cause lies with the host, our hosting is worth a look. For shops, read on under Shopware performance, and the fundamentals of indexing are covered under technical SEO.
How we work
How PageSpeed optimisation runs with us
- Understand
We look at your business, your systems and your figures before we suggest anything.
- Plan
You receive a concept and a quote with individual items and a realistic schedule.
- Build
We develop in stages. You see interim results on a test environment and approve them.
- Run
After go-live we take care of hosting, updates and monitoring if you want us to.
Your contacts
Your contacts for PageSpeed and Core Web Vitals
Tell us where your project stands. Tom will listen, ask questions and tell you honestly what we recommend and roughly what it will cost.
Our team for your questions
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- Aleksej Werestschagin Web development
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Technologies
Frequently asked questions about PageSpeed optimisation
All questions and answersDo I need a score of 100 in PageSpeed Insights?
No. The score is an indicator under defined test conditions. What matters more is the field data from real visitors and fast key pages. We optimise the causes and use the score as a check.
Are Core Web Vitals a ranking factor?
Google uses the Core Web Vitals as one of many signals for page experience. A fast page does not replace good content, but it improves usability, especially on smartphones.
Why is my site slow in the test but feels fast to me?
Lab values simulate a slow smartphone on a throttled connection. Your own computer is usually faster and already has many files in its cache. That is why we compare lab and field data.
Further reading Go to knowledge base
Shopware 6 performance guide 2026: how to make your shop fast
How to speed up Shopware 6.5 to 6.7: AVIF images, Redis, OpenSearch, php.ini with OPcache and JIT, PHP-FPM and database tuning with concrete values.
Related services
- SEO Agency
SEO with in-house developers: we find the issues in your shop or website and fix them directly in the system, prioritised by impact, effort and risk.
- GEO, AEO & LLM
We prepare content and product data so that AI search such as ChatGPT, Perplexity or Google's AI Overviews can understand it and use it as a source.
- Consulting
Consulting for visibility in Google and AI search: competitor analysis, keyword strategy, priorities and a 12-month plan that you implement yourself or with us.
- Backlink Building
Link building with links from a relevant context: link profile analysis, research, selection and placement, with every link documented.
Tell us about your project
A few sentences are enough to start. We will get back to you with questions or a suggested date.