Core Web Vitals consultancy
Six Planes brings together React, Next.js, AI-augmented delivery and performance optimisation so your team can move quicker without trading off accessibility or conversions.
Our team combines page-level Core Web Vitals auditing with practical execution plans and transparent delivery. That means no vague scorecards — just clear improvements, honest progress updates, and code-ready fixes that support your engineering team.
What you get
Diagnostics & insights
Our team deploys advanced Real User Monitoring (RUM) and automated lab diagnostics to isolate performance bottlenecks down to the exact line of code. We translate complex telemetry into clear execution paths that eliminate user frustration and directly lift your bottom line.
The dashboard visualisations above reflect the rigorous, metric-focused auditing environment we use to keep user experience front of mind on every single optimisation project.
Case studies
A mobile-first fashion brand with a fast-growing customer base. We removed third-party bottlenecks and rebalanced asset loading so shoppers stay engaged from hero to checkout.
Before
After
Built a stable, high-speed homepage that supported an 18% increase in add-to-cart conversion while preserving brand polish and accessibility.
A digitally native store whose homepage was safe but sluggish. We upgraded decomposed sections, enforced early content visibility, and stopped layout shifts across the site.
Before
After
Delivered a faster experience that aligned with CrUX thresholds and reduced checkout abandonment through consistent, accessible layout behaviour.
How we work
Audit & roadmap
We turn current performance data into a prioritised list of fixes that match your commercial calendar.
AI-augmented delivery
Our recommendations are written for engineering teams so changes can ship faster with predictable results.
Conversion-first testing
We align performance wins with conversion goals so every optimisation supports more completed checkouts.
Ongoing reporting
Weekly progress updates keep you informed without a lot of agency jargon.
Performance commitment
We design for the CrUX 75th percentile and target Core Web Vitals of LCP ≤ 2.5s, INP ≤ 200ms, and CLS ≤ 0.1 on real user loads.
Every page is reviewed for keyboard focus, semantic structure, link purpose and contrast so the final site is WCAG AAA compliant across both light and dark modes.
If you have an existing performance audit, we can map our delivery to your analytics and experiments so the work becomes part of your growth plan.
Contact
Send a secure message to info@sixplanes.co.uk and we will respond with a tailored summary of what can be improved on your site.
