Website Speed Optimization & Core Web Vitals
Eliminate render-blocking assets, slash mobile loading times, pass Google Core Web Vitals, and eliminate speed-related SEO ranking penalties.
Why standard agency approaches fall short
Google Core Web Vitals Penalties
Google penalizes slow websites in search rankings when mobile pages fail Largest Contentful Paint (LCP) and Interaction to Next Paint (INP).
High Mobile Bounce Rates
Over 53% of mobile visits are abandoned if a page takes more than 3 seconds to load.
Unoptimized Media & Third-Party Bloat
Bloated uncompressed PNGs, tracking scripts, and redundant CSS/JS block the main browser thread.
Engineering deliverables & specifications
LCP & INP Remediation
Targeting LCP under 2.5s and INP under 200ms through critical CSS inlining and script deferral.
Next-Gen Media Conversion (WebP / AVIF)
Full image compression, automated responsive srcset generation, and lazy-loading implementation.
Code Splitting & Render-Blocking Script Elimination
Auditing and removing unused JavaScript/CSS and moving non-essential third-party tags off the critical path.
Edge Caching & Cloudflare CDN Setup
Configuring browser caching, Brotli compression, and global edge cache rules for sub-second TTFB.
Cumulative Layout Shift (CLS 0.00) Fixes
Adding explicit image aspect ratios and font-display swap rules to eliminate visual layout jank.
Before vs After Verified Speed Audit Report
Detailed measured report showing real improvements in Google Lighthouse, PageSpeed Insights, and Core Web Vitals.
Frequently Asked Questions
How much does website speed optimization cost?
Our speed optimization packages range from £350 for standard brochure websites to £750 for large e-commerce catalogs or complex WordPress installations.
How long does the optimization take?
Most speed overhauls are completed within 2 to 4 business days on a staging environment before pushing live.
Do you offer guarantees on Core Web Vitals?
We guarantee measurable improvements on mobile and desktop metrics, targeting green Google Core Web Vitals (LCP under 2.5s, CLS under 0.1, INP under 200ms).
Will the speed optimization break any existing features?
No. All optimization work is performed on a secure branch or staging clone, tested across devices, and verified for full functionality before going live.
Explore Related Tools & Case Studies
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Ready to engineer your platform?
Contact our senior software engineer directly for a transparent scope review and fixed milestone quote.