21phi designs product pages, collection grids, design systems and campaign visuals for Shopify Plus brands, builds them on Shopify Hydrogen, and stays as the team that keeps the storefront sharp after launch.
21phi is a Shopify design agency for ecommerce brands that want product pages, collection grids and campaign visuals designed with precision and built by the same team. It is for DTC brands on Shopify Plus whose storefront has drifted from the brand, and whose teams want design decisions made by people who also own the code.
Much ecommerce design fails in the hand-off: an agency ships a file, a developer approximates it. We design and build on Shopify Hydrogen, Shopify's React-based framework for building headless storefronts on top of Shopify's Storefront API; current versions are built on React Router (formerly Remix). The people who draw the product page ship it.
We also stay. After launch we remain the team behind the store, inside your channels, taking requests from marketing, customer care and the founder. That costs more than a body shop, and it is why the storefront still looks like the brand long after launch.
We start with the page that makes money. For most Shopify brands that is the product page, so the first work is a product page system: how details and fit information are organized, where shipping and returns sit, how size and color selectors behave on a phone. Collection pages, the cart and the homepage are designed to serve that page.
Where a decision is genuinely uncertain, we make it an A/B test, a controlled experiment that splits traffic between variants and reads one change at a time. Trust block placement, collection grid layouts, color selector UI: design questions we have settled with data for one of our Shopify Plus clients, not with opinion. The testing discipline is described under conversion rate optimization.
A design system is the set of spacing, typography, color and component rules that every page follows. We build one for each storefront we design and share it with the brand's other partners, so campaign creative reads as one brand with the storefront.
Requests go into a shared task board and the group chats we already sit in. A new section for a launch or a quick-view for the collection grid is drawn in Figma, built by us and reviewed on a staging link before it goes live. Nobody translates between a design agency and a developer: they are the same people.
We design for the stack we build on. Shopify Plus is Shopify's enterprise plan with higher limits, checkout extensibility, Shopify Functions, B2B and Markets features, and we build on Shopify Plus with Hydrogen storefronts hosted on Oxygen. A headless storefront can express product systems, colorway logic and motion that a Liquid theme cannot, and we design knowing exactly what it can render. The build side is described under Shopify Hydrogen development.
Checkout stays Shopify-hosted, and we tell clients plainly what checkout branding can and cannot do. A Shopify Plus design agency that knows the platform limits saves you from paying for mockups that cannot ship. Editorial content lives in Sanity, a headless CMS 21phi uses for editorial and marketing content on its own site and on client storefronts; product data stays in Shopify.
We do not produce photography or video; clients supply the shoots. We make them go further: product retouching and color grading across colorways, 3D renders for products not yet photographed, AI-assisted product rotation and hero motion for campaign pages, social grid planning so storefront and feed look like one brand.
This is visual work inside the ongoing relationship, not a separate creative agency. A recolor for a drop is a request in the channel, reviewed with the founder before it ships.
An embedded team is 21phi's engagement model after launch: the agency works inside the client's channels and roadmap as the storefront, analytics and growth team, on a monthly retainer scoped per client. Launches and drops get a landing page, storefront blocks and creative variants on a calendar that leaves time for QA. Urgent fixes go to the front of the queue.
Requests come from every department and all of them land with us: visuals from marketing, a final-sale label or a shipping page update from customer care, a navigation change from the founder. Integrations, broken apps, analytics and urgent fixes are handled by the same team that designed the page, with a named senior person on the other end. The retainer itself is described under Shopify support and maintenance.
This costs more than a body shop. A body shop quotes a mockup and leaves; we carry the design system, the codebase and the backlog, and we are accountable when something looks wrong on a Friday. It pays because design debt does not pile up unseen, and your team has one place to send every storefront question.
Brands come to us at one of two points: the storefront no longer matches the brand after years of theme edits, or a Shopify Hydrogen build is planned and the design has to be ready for it. Either way, the first call is about your pages, not about us.
You get a small senior team based in Toronto, working with brands across the US and Canada, that designs, builds and keeps improving Shopify Plus storefronts. The range shows in a Shopify Hydrogen storefront 21phi designed and built for Kayusha, a premium pet-carrier brand, and in Éva Blanc, a 21phi concept store that carries the full visual language. If a Liquid theme would serve you better, we will say so.
A Shopify Hydrogen storefront for a men's performance apparel brand, built around product systems and run by 21phi as the embedded storefront, analytics and growth team.
Shopify Plus · Shopify Hydrogen on Remix / React Router · Oxygen edge hosting · Storefront API and Customer Account API · Shopify Markets · Shopify web pixels and ad pixels, implemented in code · Amplitude for funnels, retention and session replay · Mux for video
A Shopify Hydrogen storefront 21phi designed and built for Kayusha, a premium pet-carrier brand: quiet typography, large imagery, colorway swatches, filters and a short path to checkout.
Shopify, running products, inventory, orders and checkout · Shopify Hydrogen on Remix / React Router · Oxygen edge hosting, deployed from Git · Storefront API, Shopify's GraphQL API that a headless storefront uses to read products, collections, carts and customer data · Shopify checkout, kept hosted by Shopify · Shopify CDN for product imagery
Éva Blanc is a 21phi concept store: a fictional premium skincare brand whose identity, 3D product renders, editorial brand story and Shopify Hydrogen storefront were all made in-house.
Shopify Hydrogen on React Router · Oxygen edge hosting · Storefront API for products, collections and carts · Shopify-hosted checkout and customer accounts · 3D rendering for product and texture imagery · Figma for design and hand-off
A Shopify design agency designs the customer-facing storefront of a Shopify store: product pages, collection pages, cart, landing pages and the visual system that ties them together. 21phi goes further than the design file: we build what we design on Shopify Hydrogen, A/B test the decisions that matter, and stay embedded with the brand's team after launch.
Yes. 21phi is a Shopify Partner with Shopify Plus experience and designs for Shopify Plus brands specifically: product systems, colorway logic and cart interactions that a standard theme cannot express. We design knowing what checkout extensibility and Shopify Markets allow, and we are honest about what Shopify's hosted checkout cannot be made to look like.
Yes. Product page redesign is a natural starting point for 21phi's ecommerce UX work, because it is where buying decisions happen. We redesign the page as a system covering details, fit guide, trust block and selectors, build it on a Shopify Hydrogen storefront, and A/B test the placements that are uncertain rather than guessing.
Yes. 21phi is based in Toronto, Canada, and works primarily with DTC brands in the United States, with Canada second. Reviews happen on staging links, requests go through the client's own group chats, and the design and the build come from the same people, so a US brand hiring a Shopify web design agency gets the same embedded team wherever it is based.
No. Clients supply photo and video shoots, and 21phi makes them work harder on the storefront: product retouching and color grading across colorways, 3D renders for products not yet photographed, AI-assisted product rotation and hero motion for campaign pages, and social grid planning. Visual work is part of the ongoing engagement, not a separate creative agency.
The storefront keeps being designed. 21phi stays as an embedded team on a monthly retainer, inside the client's channels, handling drops and campaign landing pages, visual requests from marketing and fixes requested by customer care. A named senior person is accountable for every request. This costs more than a body shop, and it pays because design debt does not build up.
21phi designs, builds and keeps running headless storefronts on Hydrogen, Oxygen and the Storefront API for Shopify Plus brands, and stays embedded with your team as the people who own the store after launch.
21phi turns funnel data, UX friction and merchandising gaps into a disciplined A/B testing program on Shopify, read by segment, and stays embedded with your team to act on what it finds.
The real work starts after launch.
