Top E-commerce Design Agencies for High-Conversion Stores

A great online store isn’t just about looking good — it needs to work smoothly, load fast, and actually get people to buy. That’s where the right e-commerce design agency comes in. These teams know how to build storefronts that not only catch the eye but make shopping feel effortless, whether someone’s on desktop or scrolling on their phone. Whether you're moving to Shopify Plus, starting fresh on BigCommerce, or just trying to clean up your mobile UX, these agencies know what they're doing. They've helped fast-moving startups and big-name brands turn clicks into customers — and keep them coming back.