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·3 weeks
Industry: ecommerceWeb & web app

Core Web Vitals rescue: LCP 4.5s → 0.9s, organic +34%

A DTC brand's Next.js + Shopify storefront was losing rank to competitors purely on speed. Three weeks, five targeted changes, traffic back on track.

THE PROBLEM

[1/3]

  • 01LCP 4.5s (red), CLS 0.21 (red), INP 420ms (amber).
  • 02Organic traffic down 22% YoY despite stable content.
  • 03Mobile conversion 37% lower than desktop — beyond industry norms.

THE SOLUTION

[2/3]

  • Hero image priority-loaded, font-display swap tuned.
  • Marketing pages converted to RSC — hydration payload 110 KB → 22 KB.
  • Edge ISR on product pages, 300s revalidation.
  • Aspect-ratio reserved on every image and embed; CLS back to 0.01.
  • TTFB cut from 1.1s to 90ms via Cloudflare Pages.

Technologies

Next.jsShopify HydrogenCloudflarePlaywright

THE OUTCOME

[3/3]

  • 01LCP: 4.5s → 0.9s
  • 02CLS: 0.21 → 0.01
  • 03Organic traffic: +34% in 3 months
  • 04Mobile conversion gap: −37% → −8%
  • 05Shopify Hydrogen audit handover + runbook

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