Fashion retail · UK / EU

Headless commerce migration, twice the conversion

A UK fashion retailer's legacy store was slow and clunky on mobile. The brief: migrate to a headless storefront that is fast, easy to merchandise, and converts far better on phones.

Catalog: 6,500 products Stack: Next.js · Commerce API · Stripe Timeline: 7 weeks
store_perf · analytics
updated today
Conversion rate
+96%
vs legacy store
Average order value
+14%
better bundling
Page load
1.2s
was 4.8s
Cart abandonment
−22%
smoother checkout

Conversion rate

weekly %, before vs after migration

Page load time

seconds by template · lower is better

◆ Findings
  • The mobile store took nearly 5 seconds to load — and most shoppers are on mobile.
  • A heavy, multi-step checkout was losing one in three carts.
  • Merchandising changes needed a developer, so the catalog felt static.
✓ What we did
  • Moved to a headless storefront with images and code tuned for mobile speed.
  • Rebuilt checkout into a single fast step with wallet and express pay.
  • Gave the team self-serve merchandising so they can re-arrange shelves themselves.

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