docs/developer/storefront/nextjs/customization.mdx
The storefront is yours to modify — the code ships in your project so you can restyle it, swap components, and change the data layer directly. Scaffold a project with create-spree-app, then edit the storefront under apps/storefront/.
The storefront evolves upstream. To keep pulling improvements while you customize, own the code in your own Git repository (a fork of spree/storefront, or your own repo with the storefront as an upstream remote):
# Point an "upstream" remote at the official storefront
git remote add upstream https://github.com/spree/storefront.git
# Pull in the latest changes
git fetch upstream
git merge upstream/main
Resolve any conflicts in your customized files, then commit.
The storefront uses Tailwind CSS 4, which replaces the traditional tailwind.config.ts with CSS-native configuration via the @theme directive in src/app/globals.css.
Edit the @theme inline block in src/app/globals.css to change colors, fonts, and other design tokens:
@import "tailwindcss";
:root {
--background: #fcfaf7;
--foreground: #171717;
}
@theme inline {
--color-background: var(--background);
--color-foreground: var(--foreground);
--font-sans: var(--font-geist);
/* Replace with your brand colors */
--color-primary-50: #eff6ff;
--color-primary-100: #dbeafe;
--color-primary-200: #bfdbfe;
--color-primary-300: #93c5fd;
--color-primary-400: #60a5fa;
--color-primary-500: #0077ff;
--color-primary-600: #0066dd;
--color-primary-700: #0055bb;
--color-primary-800: #004499;
--color-primary-900: #003377;
--color-primary-950: #001d4d;
}
Variables defined in @theme inline become Tailwind utilities automatically — for example, --color-primary-500 maps to bg-primary-500, text-primary-500, etc.
All components live in src/components/ and can be customized or replaced:
src/components/
├── cart/ # CartDrawer
├── checkout/ # AddressStep, DeliveryStep, PaymentStep, StripePaymentForm, etc.
├── layout/ # Header, Footer, CountrySwitcher
├── navigation/ # Breadcrumbs
├── products/ # ProductCard, ProductGrid, ProductCarousel, Filters, MediaGallery, VariantPicker
└── search/ # SearchBar
Components use standard React patterns — modify them directly or replace them entirely with your own implementations.
To customize API behavior, modify the server actions in src/lib/data/. Each file handles a specific domain:
| File | Purpose |
|---|---|
products.ts | Product listing and detail queries |
cart.ts | Cart operations (add, update, remove) |
checkout.ts | Checkout flow (addresses, shipping, completion) |
customer.ts | Authentication and profile management |
addresses.ts | Address CRUD |
orders.ts | Order history |
payment.ts | Payment sessions and processing |
categories.ts | Categories |
countries.ts | Country and region data |
cookies.ts | Auth check helper |
store.ts | Store configuration |
credit-cards.ts | Saved payment methods |
gift-cards.ts | Gift card management |
utils.ts | Shared helpers (error handling, fallbacks) |
These server actions call @spree/sdk directly, using helpers in src/lib/spree/ for auth cookies and locale resolution. You can add custom logic, caching strategies, or additional transformations as needed.
Follow the existing App Router pattern with localized routes. Place pages under the (storefront) route group to inherit the shared header/footer layout:
src/app/[country]/[locale]/(storefront)/your-new-page/page.tsx
import { getProducts } from '@/lib/data/products';
export default async function YourNewPage() {
const products = await getProducts({ limit: 6 });
return (
<div>
<h1>Your New Page</h1>
</div>
);
}
The storefront can render and send its own order, shipment, and account emails with react-email and Resend, driven by Spree webhooks. See the dedicated Transactional Emails guide.
If you prefer to build from scratch instead of using the starter, you can use the @spree/sdk package directly in any Next.js application. The storefront's src/lib/spree/ directory contains reusable helpers for cookie-based auth, locale resolution, middleware, and webhook verification that you can copy into your own project.