Core Web Vitals optimisation for websites that convert.
Core Web Vitals and website speed optimisation for businesses that need faster pages, cleaner code, better PageSpeed signals and a smoother mobile experience before traffic is wasted.
A faster website is not
just a technical nice-to-have.
Slow pages affect trust, form completions, checkout confidence, ad performance and the way people experience your brand on mobile. We fix performance properly: not by chasing a vanity score, but by improving the real issues behind loading speed, responsiveness and layout stability.
Improve the page’s first useful moment
We target heavy hero images, slow server response, render-blocking CSS, font loading and delayed content that can hold back Largest Contentful Paint.
Reduce the friction after a tap or click
We review scripts, apps, third-party tags, main-thread work and theme bloat that can make menus, forms and checkout interactions feel slow.
Stop layouts jumping as pages load
We fix missing media dimensions, font swaps, banners, embeds and late-loading components that cause visible page movement and user frustration.
We do not sell
a plugin switch.
We fix the system.
Many performance fixes fail because they treat speed as one setting inside a caching plugin. In reality, Core Web Vitals are affected by design decisions, hosting, images, fonts, code quality, app choices, tracking scripts, page builders, content structure and how the site is maintained after launch.
Vistoplex approaches speed from the full website stack. We audit the front end, CMS, hosting layer, media setup, tracking tags and conversion journeys before recommending what to change.
“The aim is not a temporary green score on one test. The aim is a faster, cleaner website that still looks right, tracks conversions and supports SEO.”
This makes the service useful for existing websites, redesign projects, SEO campaigns, Google Ads landing pages and e-commerce stores where performance has a direct effect on enquiries or revenue.
The three signals
we build the work
around.
Core Web Vitals focus on loading performance, responsiveness and visual stability. We connect each metric to practical fixes rather than sending a report full of generic warnings.
Largest Contentful Paint
The main content needs to appear quickly, especially on mobile. We optimise the elements most likely to hold it back.
Interaction to Next Paint
A page can look loaded but still feel heavy. We reduce the work that blocks clicks, taps, forms and menus.
Cumulative Layout Shift
Pages should not jump around while a user is reading, tapping a button or trying to complete a form.
Lab and real-user checks
We use lab tools to diagnose issues, then check whether real-user data is improving across mobile and desktop where data is available.
A practical optimisation sprint,
not a generic PDF report.
The work is shaped around what your site actually needs. A lightweight brochure website, a Shopify store and an Elementor-heavy WordPress build rarely have the same performance problems.
Speed and Core Web Vitals audit
We test priority pages across mobile and desktop, then translate technical findings into a ranked action plan.
Front-end and CMS fixes
We implement the fixes that make the biggest difference while protecting your design, forms, tracking and SEO setup.
Hosting, caching and delivery
Where needed, we review the environment behind the website rather than blaming the theme alone.
Speed without breaking the journey
Performance work is tested against the things that make money: forms, checkout, tracking, chat widgets and calls to action.
Before-and-after reporting
You get a clear comparison of what changed, what improved and what still needs monitoring as field data updates.
Monitoring and maintenance
Speed can drift when new plugins, apps, scripts and content are added. We can keep the site monitored after the sprint.
Measured with the tools
clients and search teams
recognise.
We do not rely on one test result. We use a mix of Google tools, lab diagnostics and platform-specific checks so you can see the difference between quick wins, deeper development work and issues that need ongoing monitoring.
PageSpeed Insights
Lighthouse
Search Console
GTmetrix
WebPageTest
WordPress
Shopify
Webflow
Cloudflare
SemrushSpeed fixes for the
systems your business
actually uses.
The right fix depends on the platform. We do not treat a Shopify app stack, Webflow animation-heavy site and WordPress Elementor build as the same problem.
WordPress speed optimisation
For Elementor, WooCommerce, custom themes and plugin-heavy sites that need cleaner assets, fewer conflicts and safer updates.
Shopify speed optimisation
For stores where apps, tracking scripts, image-heavy collections and theme sections are slowing product discovery and checkout confidence.
Webflow performance checks
For polished visual sites where animation, fonts, embedded widgets and large media need balancing against speed and search readiness.
Custom websites and landing pages
For bespoke front-end builds, static sites, Laravel/React/Next.js projects and paid campaign landing pages where every second matters.
Plugin fix vs a proper
Core Web Vitals sprint.
How we improve
performance without
guesswork.
Benchmark priority pages
We test the homepage, high-value service pages, landing pages, product pages or checkout flows depending on your business model.
Map issues to business impact
We separate quick wins from deeper development work so you can see what is urgent, what is optional and what could affect conversions.
Fix in a safe environment
Where possible, we work on staging first, then test visual layout, forms, tracking, menus and conversion paths before launch.
Optimise the page stack
Images, fonts, CSS, JavaScript, apps, caching, delivery and hosting are reviewed as a connected system.
Retest and document changes
You receive a clear change log, new benchmarks and remaining recommendations instead of a vague “speed improved” message.
Monitor the site after changes
We can monitor performance after launch because new apps, pixels, popups and content can slowly reintroduce bloat.
Clear starting points
for speed and CWV
work.
Exact pricing depends on platform, number of templates, existing technical debt and whether the work is audit-only or implementation-led. These ranges are designed to qualify commercial enquiries without promising a score before we have seen the site.
| Service | Best for | Typical scope | From |
|---|---|---|---|
| Core Web Vitals audit | Businesses that need a clear technical priority list before committing to fixes. | Priority-page testing, Search Console review, PageSpeed/Lighthouse checks, ranked recommendations. | £495 |
| Focused optimisation sprint | Sites with specific slow pages, poor PageSpeed scores or mobile performance issues. | Implementation of agreed fixes, retesting, before-and-after report. | £1,250 |
| WordPress / Shopify performance project | Plugin-heavy WordPress sites, WooCommerce stores or Shopify stores with app and script bloat. | Platform-specific audit, development fixes, app/plugin review, conversion journey testing. | £1,750 |
| Ongoing performance monitoring | SEO campaigns, e-commerce stores and landing page programmes where speed must stay stable. | Monthly checks, issue alerts, CMS/app update review and practical optimisation actions. | £295/mo |
What the work should
help your site do
better.
Reduce wasted traffic
Traffic from SEO, Google Ads or social media is expensive. Faster pages help more visitors reach the point where they can understand your offer and take action.
Support technical SEO
Core Web Vitals are one part of a wider technical SEO foundation, alongside crawlability, indexation, internal links, content quality and site structure.
Improve conversion confidence
A slow or jumpy website can make a business feel less reliable. Performance work helps the site feel cleaner, more modern and easier to use.
Use this page to strengthen
the wider web design
cluster.
This page should support the main web design hub, SEO page, maintenance page and future platform pages. Link to it wherever performance is mentioned as a reason to build, redesign or maintain a site properly.
Website Design
Use this as the main service hub and link back from the speed section.
Open service →SEO Services
Connect performance to technical SEO, crawlability and search visibility.
Open service →Website Maintenance
Use this as the ongoing support page after speed fixes are complete.
Open service →WordPress Website Design
Good internal link for WordPress speed and plugin-heavy performance issues.
Open service →Shopify Website Design
Useful for store speed, app stack review and product page performance.
Open service →Website Redesign
Performance fixes can be a lighter alternative before committing to a full rebuild.
Open service →What we look for
during a speed
audit.
Front-end performance
We review image sizes, video use, CSS delivery, JavaScript bundles, fonts, animation, lazy loading, preloading, embeds and third-party scripts. The goal is to reduce what the browser needs to download, parse and execute before the page feels useful.
This is especially important for pages built with multiple sliders, large hero media, chat widgets, tracking scripts and page-builder sections that load more than the visitor needs.
CMS, hosting and maintenance
We check plugin/app bloat, theme weight, old code, hosting response, cache settings, CDN configuration and whether updates are likely to reintroduce the same speed issues.
For WordPress and Shopify sites, the ongoing process matters. A site can pass after launch and still become slow again when new apps, pixels, popups, banners or uncompressed media are added.
Core Web Vitals
questions clients
usually ask.
Find out what is
slowing your website.
Send us your URL and we will review the best starting point: audit-only, a focused optimisation sprint, or a wider redesign if the site is too heavy to rescue cleanly.
