# E-commerce > Turnkey online store: secure payments, inventory management and optimized checkout. Sell more with an e-commerce site built to convert. Page: https://eldev.fr/en/services/e-commerce/ · Version française: https://eldev.fr/services/e-commerce/index.md · [Home](https://eldev.fr/en/index.md) We create online stores that convert and retain your customers. Intuitive product catalogs, secure multi-currency payments, real-time inventory management and smooth shopping experiences on both [mobile](https://eldev.fr/en/services/mobile-apps/index.md) and desktop. Whether you sell 10 or 10,000 products, we build an e-commerce platform tailored to your market and optimized to maximize your revenue. Shopify, WooCommerce, Prestashop or [custom-built](https://eldev.fr/en/services/web-development/index.md): we choose the technology that matches your ambitions. ## Capabilities ### Product catalog Advanced product management with variants, dynamic filters and smart search. Your customers find what they're looking for quickly, reducing bounce rates and increasing sales. ### Secure payment Stripe, PayPal and PCI-DSS compliant banking integrations. Your customers pay with confidence using their preferred payment methods, anywhere in the world. ### Inventory management Real-time inventory tracking, low-stock alerts and multi-channel sync. Manage your stock from a single dashboard whether you sell online, in-store or on marketplaces. ### Conversion optimization Optimized checkout flow, automated abandoned cart recovery and detailed analytics. Every step of the customer journey is measured and improved to maximize your conversion rate. ## Who is this service for? You sell products online, or want to, and need a store that earns its keep. The same applies to a [restaurant](https://eldev.fr/en/sectors/restaurants/index.md) taking orders online. - [Brick-and-mortar retailer](https://eldev.fr/en/sectors/retail-ecommerce/index.md) going online for the first time - Existing store with low conversion or a high cart abandonment rate - Complex catalog: variants, multi-currency, cross-border sales or [ERP integration](https://eldev.fr/en/services/erp-consulting/index.md) - DTC brand outgrowing its current platform and ready to migrate ## How it works. We analyze your market, competitors and sales goals. Then we design your store architecture, integrate your products and configure payment methods. After thorough testing, your e-commerce site is ready to sell. ## What makes the difference. A store optimized for conversion, not just aesthetics. Every detail of the shopping journey is designed to reduce drop-offs and increase your average order value. ## Frequently asked questions. ### Shopify or custom-built: which is right for me? [Shopify](https://eldev.fr/en/technologies/shopify/index.md) is the fastest path to launch for standard catalogs under 500 SKUs, live in 2 to 4 weeks with a Shopify subscription in the mix. A custom build makes sense when you need complex logistics, ERP sync, advanced filtering or a checkout flow Shopify can't accommodate. We help you decide on a free scoping call. ### How much does an online store cost? Cost depends on scope: the platform, product volume, integrations and level of customisation all factor in. There is no standard rate, every store is quoted after a free brief, [reach out](https://eldev.fr/en/contact/index.md) for an estimate within 12 hours. ### How long does it take to launch a store? A standard Shopify store is ready in 2 to 4 weeks. A [WooCommerce](https://eldev.fr/en/technologies/woocommerce/index.md) or custom build takes 4 to 10 weeks depending on product volume and integrations. The timeline is agreed upfront and delivered in short, reviewable iterations. ### Can you migrate my store without losing data? Yes. We handle migrations between Shopify, WooCommerce and custom platforms, products, orders, customers and order history all transfer. Cutover is planned to avoid any sales downtime. If you're also refreshing the look, we align with your [UI/UX design](https://eldev.fr/en/services/ui-ux-design/index.md) work. ### Do you handle PCI-DSS and GDPR compliance? Payment flows through Stripe or PayPal, both PCI-DSS Level 1 certified, so card data never touches your servers. For GDPR, we configure cookie consent, privacy notices and data-access controls as part of the standard delivery. ## Technologies & industries - [Freelance Shopify Developer](https://eldev.fr/en/technologies/shopify/index.md): Freelance Shopify developer: custom theme, private apps, migration from WooCommerce or Prestashop, conversion rate optimisation. Free quote within 12 hours. - [Freelance WooCommerce Developer](https://eldev.fr/en/technologies/woocommerce/index.md): Freelance WooCommerce developer: custom WordPress store, Stripe and PayPal payments, stock management, dedicated extensions, performance. Quote within 12 hours. - [Retail and E-commerce: Selling Online and In Store](https://eldev.fr/en/sectors/retail-ecommerce/index.md): Online store for retailers and brands: catalogue, payments, stock synced with the till, click & collect. Shopify, WooCommerce or custom build. Quote in 12 hours. ## Other services - [Web Development](https://eldev.fr/en/services/web-development/index.md): Custom sites & apps - [Mobile Apps](https://eldev.fr/en/services/mobile-apps/index.md): iOS & Android - [Artificial Intelligence](https://eldev.fr/en/services/artificial-intelligence/index.md): Automation & chatbots - [UI/UX Design](https://eldev.fr/en/services/ui-ux-design/index.md): Memorable interfaces - [WordPress & CMS](https://eldev.fr/en/services/wordpress-cms/index.md): Content management - [Desktop Apps](https://eldev.fr/en/services/desktop-apps/index.md): Cross-platform desktop - [Hosting & Infra](https://eldev.fr/en/services/hosting-infra/index.md): Servers & deployment - [Maintenance](https://eldev.fr/en/services/maintenance/index.md): Ongoing support - [ERP & Consulting](https://eldev.fr/en/services/erp-consulting/index.md): Integrated management & audit - [Website Repair](https://eldev.fr/en/services/website-repair/index.md): Emergency, picked up within 2 hours ## Contact [Contact form](https://eldev.fr/en/contact/index.md) (HTML page: https://eldev.fr/en/contact/) · Email: contact@eldev.fr · First chat is free. Response within 12 hours on business days.