DEVELOPMENT
E-commerce Website
Custom online stores built with Next.js and Stripe: native performance, advanced product SEO and zero platform commission.
Lighthouse
audit delivered at launch
3-6
weeks to launch
∞
unlimited catalogue
0%
platform commission
At Go To Agency we build custom e-commerce websites with Next.js, Supabase and Stripe. Why not Shopify? Because SaaS platforms charge a commission on every sale, lock you into rigid templates and cap what you can do with SEO. Our headless commerce approach gives you full control: source code you own, native performance measured with Lighthouse, product pages engineered for Google rich snippets and a frictionless checkout. We worked with Chouchou Ribeyre, a regional food e-commerce brand in Burgundy, France, to showcase artisan products from the Auvergne region. Our modern stack supports an unlimited catalogue, secure payments through Stripe Connect, intelligent cross-selling and scalability without a ceiling. Whether you sell wine, handmade goods or specialty food, we turn your store into a selling machine. No platform lock-in: you keep your code, your data and your customers.
What we deliver
Concrete, quality deliverables
Conversion-driven e-commerce design
A UX and UI built to maximise add-to-cart rate: clear visual hierarchy, high-contrast CTAs, HD product photography, subtle micro-animations. Every pixel works for conversion, not decoration.
Product catalogue with SEO-ready pages
Rich product pages with schema.org Product markup, long-form optimised descriptions, lazy-loaded photo galleries, variants (size, colour, SKU), customer reviews and a product FAQ. Every product page is a landing page in its own right.
Secure Stripe payment integration
Stripe Checkout in embedded or redirect mode, card payments, Apple Pay, Google Pay and SEPA transfers. PSD2 compliance, 3D Secure and automated VAT and sales tax handling through Stripe Tax.
Optimised checkout funnel
A conversion funnel of two to three steps maximum, autocompleted address forms, real-time shipping calculation, promo codes and a loyalty programme. A sharp drop in cart abandonment.
Inventory and order management
A Supabase back office to manage stock in real time, low-stock alerts, order statuses (paid, shipped, delivered) and automatic generation of compliant delivery notes and PDF invoices.
Product SEO and rich snippets
Schema.org Product markup on every page, e-commerce Open Graph tags, a dynamic sitemap.xml that prioritises the catalogue, clean canonical URLs, multilingual hreflang and Core Web Vitals above Google's thresholds.
Responsive mobile experience
Mobile-first design, because 70% of product searches happen on a smartphone. Smooth touch navigation, one-thumb checkout, WebP and AVIF optimised images, and an optional installable PWA for an app-like experience.
Custom admin dashboard
A dedicated admin interface to manage products, orders, customers and sales analytics. Real-time KPI charts, CSV export for accounting, user and role management, and multi-vendor support where needed.
WHAT IS INCLUDED
Included in the service
OUR PROCESS
Our process
A proven methodology, documented at every step
Catalogue audit and objectives
We start with a written strategy brief handled entirely by email. We review your catalogue, your margins, your customer segments, the current purchase journey and your competitors, then send you our analysis in writing. Together we define the business KPIs: average order value, target conversion rate, expected monthly volume. This diagnosis drives the whole technical architecture.
Architecture and wireframes
We design the catalogue structure (categories, subcategories, faceted filters), model the Supabase database (products, variants, stock, orders) and produce low-fidelity wireframes of the key pages: home, listing, product page, cart, checkout. You validate the user journeys in writing before any code is written.
Design and Figma mockups
We create high-fidelity mockups in Figma: art direction, colour palette, typography and a complete design system of reusable e-commerce components (product cards, add-to-cart buttons, promo badges). Two to three rounds of iteration, with written feedback from your team, until final sign-off.
Next.js and Stripe development
Build phase in weekly sprints: Next.js 15 front end with the App Router, Supabase back end, Stripe Connect integration for payments, real-time inventory, product APIs and the full checkout funnel. Technical acceptance testing on a staging environment before we go live.
SEO and product content
Technical SEO work (schema.org, sitemap, robots.txt, performance), then writing or rewriting product pages around targeted keywords. We set up analytics tracking, advertising pixels and Google Search Console so you can follow catalogue indexing from day one.
Launch and handover
Go live, including migration from your previous site if needed, DNS configuration and 301 redirects to protect your SEO. Your team gets written and video training on the back office (adding products, managing orders, reading analytics). Technical support by email is included for 30 days after launch, with a reply within 24 working hours.
We price your ecommerce project within 24 business hours
Describe your catalogue, your integrations, your market. We come back with a technical proposal and a detailed budget range.
WHY GO TO AGENCY
Ce qui nous distingue
Custom built, not Shopify or WooCommerce
No commission per sale, no monthly subscription that grows with your revenue, no cap on products or bandwidth. The savings on platform fees typically run into thousands per year from the second year onwards. Full control over design, features and how your store evolves.
Native performance with Next.js and Vercel
A modern stack with hybrid SSG and SSR rendering, Vercel edge functions and a global CDN. Lighthouse score measured and documented at delivery, Core Web Vitals worked on (LCP, INP, CLS) and short load times. Google rewards fast sites in its ranking, which is a serious competitive SEO advantage.
Advanced e-commerce SEO
Schema.org Product markup, price and review rich snippets in Google, semantically optimised product content and intelligent internal linking between categories and products. Our e-commerce clients reach the first page on their long-tail queries within three to six months of launch.
You own the source code
You receive the entire source code and owner-level access to Supabase, Stripe and Vercel. No platform lock-in, no dependency on Go To Agency. You can leave us, hire an in-house developer or switch agencies at any time without losing your investment. Complete freedom.
ÉTUDE DE CAS : Chouchou Ribeyre
Regional food e-commerce store in Burgundy, France
[01] The challenge
Chouchou Ribeyre wanted to showcase its artisan products from the Auvergne region (cured meats, cheeses, preserves) through a credible online store. The main challenges: fine-grained management of use-by dates, cold chain logistics for delivery, secure payment to reassure premium customers, local SEO to capture regional food searches and rich product pages that do justice to the terroir and the partner producers.
[02] Notre solution
We deployed our custom Next.js, Stripe and Supabase commerce stack. Rich product pages with schema.org Product markup, HD photography of the producers and storytelling descriptions. Automated stock management with use-by date alerts, and Stripe checkout with real-time refrigerated shipping calculation by delivery zone. Core Web Vitals optimisation (LCP under 2s) and Google rich snippets. Regional SEO built in from launch, with internal linking by category and by producer.
[03] The result
+180% organic traffic in 4 months, 3.2% conversion rate (vs 1.8% on the previous site), average order value up 28%.
OUR STACK
Outils & technologies
Next.js 15
The reference React framework for high-performance commerce: App Router, server components, image optimisation and ISR for large catalogues with instant updates.
Supabase
Managed PostgreSQL with built-in auth, product image storage, realtime stock updates and row-level security for multi-vendor setups. Daily backups included.
Stripe + Stripe Connect
The global leader in online payments: PSD2-compliant secure checkout, Stripe Tax for automated VAT and sales tax, Stripe Connect for marketplaces, subscriptions and recurring invoices.
Vercel
Edge hosting with a global CDN, automatic deployments from Git, preview branches and built-in analytics. Automatic scaling through Black Friday traffic peaks.
Tailwind CSS
A utility-first CSS framework for consistent, fast interfaces. Minified CSS under 10KB in production and a design system that stays maintainable over the long run.
TypeScript
Strict static typing to cut production bugs, with IDE autocompletion and easier maintenance. Essential on business-critical commerce projects where every bug costs money.
Tiptap (product CMS)
A rich content editor for writing product pages with advanced formatting, inline images, embedded video and custom blocks, with no technical knowledge required.
Sanity or Strapi (optional)
Headless CMS for complex catalogues with editorial workflows, native multi-language support and a GraphQL API. Recommended for catalogues above 500 products.
TESTIMONIALS
What our clients say
“La boutique en ligne livrée rapidement est parfaite. Nos clients adorent l'interface et les ventes ont décollé dès le lancement.”
Julien M.
E-commerçant
“Vendre en ligne me semblait compliqué. Ils ont rendu ça simple. Ma boutique tourne toute seule et les commandes affluent.”
Nathalie G.
Créatrice de bijoux
“Migration depuis Shopify impeccable. Le site est plus rapide, les frais ont baissé et j'ai le contrôle total sur ma boutique.”
Thomas R.
Gérant e-shop
FAQ
Frequently asked questions
Shopify takes a 2% commission on every sale on top of the monthly subscription, which reaches 299 euros per month on the Advanced plan according to Shopify's published pricing at the time of writing. On 100,000 euros of annual revenue that is 5,000 euros in recurring fees. A custom Next.js and Stripe build costs more up front but pays for itself within 12 to 18 months. WooCommerce is free but suffers from mediocre performance (WordPress), frequent security vulnerabilities and a cascade of paid plugins. Our stack delivers native performance, better SEO and full control. You are investing in an asset rather than paying rent.
Pricing depends on scope: catalogue size, checkout complexity, admin dashboard, multi-vendor support, subscriptions, multiple languages, ERP integrations. A standard store, a multi-vendor site and a full marketplace involve completely different amounts of work. We send a transparent written quote after a free review of your requirements, with a reply within 24 working hours. No hidden fees, no commission per sale, no mandatory monthly subscription. Vercel, Supabase and Stripe hosting stays in your name and generally costs far less over time than a Shopify Advanced plan.
A custom e-commerce site takes three to six weeks depending on catalogue and feature complexity. A simple store with 20 to 50 products ships in three to four weeks. A store with variants, multiple languages, ERP integration and complex workflows takes six to ten weeks. Our agile method shows you concrete progress every week on a staging environment. You can test features as they land and send feedback in writing. We send a written sprint review every week so you can sign off on each stage, all by email.
Yes, entirely. At handover we transfer the complete Git repository and owner-level access to Vercel, Supabase and Stripe. Any third-party developer can read, modify or extend the code. No proprietary licence, no obscure in-house framework: we use standard open-source technologies (Next.js, React, PostgreSQL) that thousands of developers already know. This transparency is written into our contracts. You are never a prisoner of Go To Agency, and that has been our commitment from day one.
According to Stripe's published European pricing at the time of writing, Stripe charges 1.4% + 0.25 euros per transaction for European cards and 2.9% + 0.25 euros for non-European cards. No fixed monthly fee, no setup fee, no subscription. You only pay when you sell. Stripe includes 3D Secure, PSD2 compliance, fraud protection (Stripe Radar) and dispute management at no extra cost. For subscriptions or multi-vendor marketplaces, Stripe Connect adds a further 0.25% and still compares well against Mollie or PayPal. Stripe is the global e-commerce standard.
Yes, natively with next-intl or a multilingual Sanity setup. We handle English, French, German, Dutch, Italian and any other European language with correct hreflang tags for international SEO. The checkout adapts to the visitor's language automatically, currencies convert in real time and transactional emails are translated. Ideal for producers and brands targeting export markets. The additional cost is moderate and depends on the number of languages. Content translation stays on your side or goes through our translation partners.
Absolutely. More than 70% of e-commerce purchases start on a smartphone. We design mobile-first: smooth touch navigation, checkout optimised for thumb input, compressed WebP and AVIF images, optimised web fonts. A mobile Lighthouse audit before every launch, as standard. As an option we turn your site into a Progressive Web App installable straight from the browser, with push notifications and an offline mode for browsing the catalogue without a connection. The mobile experience rivals a native app without the cost of iOS and Android development.
Every product page carries schema.org Product markup with price, availability, reviews and SKU. Google can then show rich snippets in the results (stars, price, stock) that can double your click-through rate. URLs stay clean (/shop/category/product-name), title tags and meta descriptions are editable per product, and internal linking between categories and products is automatic. We generate a dynamic sitemap.xml that updates on every addition, with Core Web Vitals optimisation as standard. Our e-commerce clients reach the first page on their long-tail queries within three to six months.
Yes, unlike Shopify, which prices some plans against the number of products. Our Next.js and Supabase architecture handles catalogues of tens of thousands of SKUs without difficulty. With ISR (Incremental Static Regeneration), only the product pages that changed are regenerated, so performance stays constant even on a massive catalogue. Full-text search and faceted filters stay extremely fast thanks to PostgreSQL indexes and the Vercel edge cache. You can start with 50 products and grow to 50,000 without changing infrastructure or paying a platform surcharge.
Yes, we implement advanced commerce models. Stripe Subscriptions for monthly boxes, coffee subscriptions, SaaS services or recurring deliveries (wine, fresh produce, cosmetics). For dropshipping we connect your store to supplier APIs (Spocket, Printful, AutoDS) to automate order creation and tracking. For print-on-demand we integrate directly with Printful or Gelato. Multi-vendor marketplaces in the style of Etsy are also possible with Stripe Connect, which splits payments automatically between vendors and the platform.
We connect your store to your accounting software (Pennylane, QuickBooks, Sellsy, EBP, Sage) through APIs or Stripe webhooks. Every order automatically generates a compliant invoice in your accounting tool, which removes double entry. For heavier ERPs (Odoo, SAP, Cegid) we build custom connectors to sync stock, orders and customers in real time. Integration with Brevo or Klaviyo is also possible for marketing automation and abandoned cart recovery. Everything is configured and tested before launch.
We handle the full migration with no SEO loss. Step 1: export your Shopify or WooCommerce catalogue (products, variants, images, descriptions) and import it into Supabase. Step 2: migrate customers and order history so accounts stay intact. Step 3: systematic 301 redirects from old URLs to new ones to protect your Google rankings. Step 4: DNS configuration and go-live during off-peak hours to avoid any sales downtime. Our team has already migrated several stores with no loss of organic traffic or revenue.
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Launch your high-performance online store
Free written e-commerce review by email. Transparent quote, with a reply within 24 working hours.