Website speed optimisation and Core Web Vitals
Slow websites lose visitors, enquiries and rankings. We find exactly what's slowing your site down and fix it, so pages load quickly and pass Google's Core Web Vitals.

- Based in DevizesWorking across Wiltshire and the UK
- Clear, fixed quotesNo hidden extras or surprise bills
- Direct contactSpeak to the people doing the work
- No lock-in contractsRolling monthly care and SEO
What faster pages give you
More enquiries
Faster sites keep visitors engaged and convert more of them into customers.
Better rankings
Passing Core Web Vitals removes a ranking handicap and improves page experience.
Happier mobile users
Quick pages on 4G and rural connections, where speed matters most.
Cheaper advertising
Fast landing pages improve ad quality scores and cost per conversion.
Better impression
A snappy site feels professional and trustworthy.
Lower hosting load
Efficient pages use fewer server resources and cope better with traffic spikes.
What we optimise
Everything is agreed up front, so you know exactly what you're getting before any work starts.
Discuss your project- Largest Contentful Paint (LCP)How quickly the main content appears, often fixed with image and server improvements.
- Interaction to Next Paint (INP)How quickly the page responds to taps and clicks, often fixed by reducing heavy scripts.
- Cumulative Layout Shift (CLS)How much the page jumps around while loading, fixed with proper sizing and font loading.
- ImagesModern formats like WebP and AVIF, correct sizing and lazy loading.
- Code and scriptsRemoving unused CSS and JavaScript, deferring non-essential scripts.
- FontsSelf-hosted, subset fonts that load quickly without layout jumps.
- Caching and compressionBrowser caching, Brotli or Gzip compression and CDN setup.
- HostingAdvice on, or migration to, faster hosting where it's the bottleneck.
What are Core Web Vitals?
Core Web Vitals are three measurements Google uses to judge the real-world experience of a page. Largest Contentful Paint measures loading speed, Interaction to Next Paint measures responsiveness, and Cumulative Layout Shift measures visual stability. Google collects this data from real Chrome users visiting your site.
To pass, a page should have an LCP of 2.5 seconds or less, an INP of 200 milliseconds or less and a CLS of 0.1 or less, for at least 75% of visits. You can read more in our plain-English guide to Core Web Vitals.
Why is my website slow?
The most common causes we find are surprisingly consistent:
- Huge, uncompressed images uploaded straight from a camera or phone
- Page builders and themes that load far more code than the page needs
- Too many plugins, each adding its own scripts and styles
- Third-party widgets such as chat tools, social feeds and trackers
- Cheap, overcrowded hosting with slow server response times
- No caching or compression
You might also need
Technical SEO
If Google can't crawl, understand or load your website properly, great content won't rank.
Learn more →Managed hosting
Fast, reliable hosting with SSL, daily backups, security and monitoring included, managed by people who know your website, not an anonymous call centre..
Learn more →Website redesign
Is your website slow, dated or simply not bringing in enquiries? We'll rebuild it into a fast, modern, search-friendly site, and protect the Google rankings you've already earned..
Learn more →Core Web Vitals explained
What LCP, INP and CLS mean for your website.
Learn more →Website speed optimisation: your questions answered
How do I check my website's speed?
Google's free PageSpeed Insights tool gives a useful snapshot, including real-user Core Web Vitals data where available. Our free website review includes a speed check with a plain-English summary.
Can you speed up a WordPress website?
Yes. WordPress sites can usually be made much faster by optimising images, reducing plugins, improving caching and hosting. For sites built on very heavy page builders, a rebuild is sometimes the better long-term option.
Will speeding up my site improve my rankings?
Speed is one of many ranking factors. It rarely transforms rankings on its own, but it removes a disadvantage, and the improvement in user experience usually means more enquiries from the visitors you already get.
Let's talk about your project
Send us a few details and we'll reply within one working day with ideas and a clear, no-obligation quote.
- WhatsAppSend us a quick message
- hello@westerlydigital.co.ukWe reply within one working day