Coolsipster Case Study
Coolsipster sells luxury sustainable drinkware items directly to retail consumers.
Estimated ROI
Recouped client development investments within 3 months of launching the Next.js storefront.
Client Profile
Sustainable Drinkware Retailer
The Business Problem
Slow page load times on templates Shopify configurations led to shopping cart drops.
Research & Planning
Found that heavy images payloads and server database lookups during page load were stalling checkouts.
Migrated to Next.js using static generation (SSG) for instantaneous layouts rendering.
Design & Architecture
Created clean visual layouts with fluid Framer Motion animations matching brand colors.
Next.js static views, connected to Express backend APIs and MongoDB collections, cached via Redis.
Implementation & Testing
Developed the Next.js storefront, Stripe checkout gateways, and dashboard order handlers.
Conducted stress load tests simulating 5,000 checkout queries simultaneously.
Deployment & Outcomes
Hosted Next.js pages on edge servers (Vercel) and the backend API on Docker containers.
Page load speeds dropped below 1s, resulting in a 24% sales conversion increase.
Key Outcomes
- Page load speeds improved by 60%
- Checkout conversion rate increased by 24%
- Stripe webhook payout time reduced below 500ms
Lessons Learned
Pruning unused JavaScript hydration code was crucial to hit target mobile loading speeds.
Our website loads instantly now. We've seen a massive jump in mobile conversions.
David Vance
E-Commerce Director, Coolsipster