
Small Batch Brine
A craft food storefront where every order lands in the owner's WhatsApp.
Weekly tee drops with cart, promo codes and product structured data wired in.
↳ Collection Drops · Discount Codes · Zero Platform Fees


Concept brief: a streetwear label shipping drops every Friday needs a storefront that handles collections, promo codes and SEO per product, without a monthly platform fee.
Next.js storefront with a cart that survives refresh, discount-code validation at checkout, and Organization, WebSite, SearchAction, LocalBusiness and WebPage JSON-LD so each drop is indexable. Product imagery served as optimised static assets on Vercel.
Engineering outcomes (lab)
Platform Fees
$39/mo
Before
$0/mo
After
Cart Persistence
Lost on refresh
Before
Survives refresh
After
Product SEO
No structured data
Before
5 JSON-LD types
After
Lighthouse mobile · connection range (2026-10-15)
150ms RTT: 73 · LCP 4.0s
Lighthouse preset
measured 16ms: 83 · LCP 1.7s
Measured line: the same build, not an improvement
Measured with Lighthouse 13 on mobile emulation, simulate throttling, median of 3 runs, against the live site on 2026-10-15. Published under two named profiles: Lighthouse’s mobile preset (150 ms RTT / 1.6 Mbps / 4× CPU), which anyone can reproduce, and this machine’s actual connection (16 ms / 4 Mbps / 4×), characterised by ping and a timed download rather than assumed. Connection assumption alone moves LCP by up to 3× on identical bytes, so neither figure is the whole truth alone. Lab numbers on a throttled connection, not client analytics or revenue data. No client affiliation implied.
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