(Speed Optimisation)
Every page under
two seconds.
Guaranteed.
WebAnts is a London website speed optimisation agency. We audit, profile, and fix slow websites, improving Core Web Vitals, Lighthouse scores, and conversion rates for businesses across the UK.
Get a free audit
90+
Target Lighthouse score
+7%
Avg conversion lift per 1s saved
4.9★
Rated on Google & Clutch
48hrs
Audit turnaround
(What we fix)
Every layer of your
performance stack.
01
Core Web Vitals Audit
Comprehensive Lighthouse and CrUX audit covering LCP, INP, CLS, and TTFB. Written report with prioritised findings, effort estimates, and expected impact for each fix.
02
Image Optimisation
Convert all images to WebP/AVIF, implement responsive srcset, add lazy loading, and configure next-gen formats at the CDN layer. Often the single biggest speed win on image-heavy sites.
03
JavaScript & CSS Optimisation
Defer non-critical JS, eliminate render-blocking resources, tree-shake unused code, and minify CSS. Plugin audits for WordPress to identify performance-killing bloatware.
04
Caching Configuration
Server-side caching (Redis, Nginx FastCGI), browser cache headers, and WordPress caching plugin configuration (WP Rocket, W3 Total Cache). Correctly configured caching cuts TTFB dramatically.
05
CDN Setup & Configuration
Cloudflare or BunnyCDN setup, DNS configuration, cache rules, image optimisation at the edge, and Brotli compression. Static assets served from 300+ edge locations worldwide.
06
Font Loading Optimisation
Self-hosted fonts with font-display: swap, preload hints, and subsetting. Eliminates layout shift caused by web font loading and reduces third-party DNS lookups.
07
Third-party Script Audit
Identify and defer analytics, chat widgets, ad scripts, and tracking pixels that block the main thread. Implement Partytown or script facades where appropriate to isolate impact.
08
Hosting & Server Optimisation
Audit current hosting stack. Recommend or implement server upgrades, PHP version, OPcache, MySQL optimisation, or migration to a faster host (Kinsta, Cloudways, Vercel) if warranted.
(How we work)
Measure first.
Fix second.
Audit
We run Lighthouse, WebPageTest, and CrUX data analysis. Deliver a written report ranking every issue by impact vs. effort within 48 hours of kickoff.
Fix Plan
We agree which fixes to implement and in what order. Flat quote for the work before we touch a file.
Optimisation
Changes made on a staging environment first, benchmarked before and after. Deployed to live once scores are confirmed.
Post-fix Report
Before/after Lighthouse and Core Web Vitals scores delivered in writing. Ongoing monitoring setup if required.
(Deliverables)
Before & after scores,
in writing.
- Written performance audit report
- Prioritised fix list with effort estimates
- Before & after Lighthouse scores
- Core Web Vitals report (LCP, INP, CLS)
- Image optimisation (WebP/AVIF)
- Caching & CDN configuration
- Font & script optimisation
- Post-optimisation monitoring setup
(Tools)
“WebAnts built something better than I’d ever imagined, shipped faster than any agency I’ve worked with.”
LaTisha Ebanks
Marketing Director, North Pointe Marketing
(FAQ)
Common questions about
website speed optimisation.
What is a good Lighthouse score?
Google considers 90–100 "Good", 50–89 "Needs Improvement", and below 50 "Poor." For SEO purposes, the most important signals are the Core Web Vitals: LCP (Largest Contentful Paint) under 2.5s, INP (Interaction to Next Paint) under 200ms, and CLS (Cumulative Layout Shift) under 0.1. We target 90+ on desktop and 75+ on mobile as a practical goal for most sites.
Will improving page speed help my Google rankings?
Yes, Core Web Vitals are a confirmed Google ranking factor as part of the Page Experience signal. More importantly, faster sites convert better: a 1-second improvement in load time increases conversions by an average of 7%. Speed improvements compound across both SEO and conversion rate.
How much can you improve our Lighthouse score?
Most WordPress sites we audit score 20–50 on mobile. After optimisation, we typically achieve 70–90+ on mobile. The exact improvement depends on starting state, hosting environment, and how much of the fix plan is implemented. We set honest expectations in the audit report before any work is quoted.
How long does website speed optimisation take?
A basic optimisation, image compression, caching, and CDN setup, typically takes 1–3 days. A comprehensive optimisation including JS/CSS cleanup, server configuration, and third-party script management takes 1–2 weeks. We agree scope and timeline upfront.
How much does speed optimisation cost?
A standalone performance audit costs from £300–£500 and includes a written report with prioritised recommendations. A full optimisation engagement, audit plus implementation, typically costs £1,000–£3,500 depending on site complexity and hosting environment. Flat quote after the audit.
Do you work on non-WordPress sites?
Yes. We optimise WordPress, Webflow, Shopify, Squarespace, Next.js, and custom-built sites. The techniques differ by platform, for example, Shopify has different caching constraints than WordPress, but the diagnostic approach is the same: measure, prioritise, fix, confirm.
Make your website fast enough to rank and convert. →
Free performance audit. Flat quote. No prepayment.
WebAnts is a London website speed optimisation agency. We improve Core Web Vitals, Lighthouse scores, and page load times for WordPress, Shopify, Webflow, and custom-built websites. Services include performance audits, image optimisation, caching configuration, CDN setup, and JavaScript/CSS optimisation. Based in London, serving UK and worldwide clients. 4.9★ rated.