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Celerart

Shopify development, from custom theme to headless

Shopify runs the hard parts of selling online: checkout, payments, stock and updates. We build what sits on top: a custom theme, or a headless storefront in Next.js with your content in Sanity, designed around your brand instead of a template.

Rigol Mall e-commerce website with product listings in grid and list view formats.

A Shopify store that looks and runs like yours

Most Shopify stores start from a theme and a pile of apps. We build the store your brand needs and keep the app list short.

  • 01

    Custom Shopify themes

  • 02

    Headless storefronts in Next.js

  • 03

    Content and landing pages in Sanity

  • 04

    Checkout and app integrations

  • 05

    Store migrations to Shopify

  • 06

    Speed and Core Web Vitals

Designs Worth Remembering

A curated mix of visuals that speak louder than words — bold, refined, and uniquely crafted.

  • WixFix website homepage on a tablet: dark hero with "Create Greatness, Create your Future" headline and orange CTA
  • Basesite mobile website screens on three phones: client testimonial, cost-cutting hero and AI optimizer feature
  • Pragma website on a laptop: dark terminal-style homepage with monospace "We Understand Like Nobody Else" headline
  • IVC (Intelligent Visual Computing) website homepage on a laptop with service list and red accent panel
  • TurinTech website on a tablet: "Your Code and Data Evolved" hero with a grid of feature icons
  • Turnkey Construction website on a laptop: "Expert Solutions in Woodworking" hero with a wood-clad modern house
  • Gausium website on a laptop: dark hero introducing the Phantas next-gen robotic cleaner
  • XMAQUINA website on a laptop: dark hero with a humanoid robot and decentralized autonomous machines headline
  • Access Medical Clinic website on a laptop: About page hero with a masked surgeon
  • Dot-matrix signage design with "Introduction to the New Generation" headline in black and violet
  • Snapchain website on two laptops: light and dark "Bitcoin Security for All Chains" hero with green lightning logo
  • Cyloq mobile website on a phone: dark case study page with cybersecurity article card, set in a server rack
  • Mriya brand stationery: envelope, folded brochure with classical paintings, and yellow and black business cards
  • Blazar roll-up banner: "Personalized Medicine, Designed for You" with pink gradient graphic
  • Synchronize branded letterhead on a bright blue background
  • Revver black and green envelopes and letter with branded stationery
  • Revver brand guidelines typography page showing the typeface specimen and character sets
  • Woman in embroidered Ukrainian blouse and red bead necklace, eyes covered by a blue and yellow ribbon
  • Gausium branded stationery: invoice, business card and blue bubble mailer
  • Adsorb business cards: black logo card and white card for Tanguy Van Ingelgom
  • Pusher business cards in pink and cobalt blue with the Pusher wordmark
  • Revver cards in green and black arranged in a radial pattern
  • Revver street billboard: green poster advertising a "Fully-featured POS system"
  • IVC website About page on a tablet: red cityscape hero with "Pioneering Innovation Since 1987"

Theme or headless?

Both use Shopify for products, checkout and orders. The difference is how much freedom the storefront needs.

  • 01

    Custom theme

    A theme built from scratch for your brand, with sections your team can rearrange in the Shopify editor. The right choice for most stores: quick to launch and simple to run.

  • 02

    Headless with Next.js

    Your storefront becomes its own site in Next.js, talking to Shopify through its Storefront API. Full design freedom, fast pages, and room for features a theme can’t hold.

  • 03

    Content in Sanity

    Lookbooks, guides and campaign pages are edited in Sanity, with products synced from Shopify, so editorial content sits next to the catalogue instead of in blog posts and metafields.

  • 04

    Integrations

    Email, reviews, subscriptions, ERP and shipping tools connected through apps or the Shopify API, chosen so you pay for as few as possible.

What every Shopify build includes

Whichever route you take, the store is fast, editable and yours.

  • 01

    Shopify runs the commerce

    Checkout, payments, taxes and stock stay with Shopify, so you get its reliability and its updates without maintaining servers.

  • 02

    Your team can edit it

    Sections, pages and content are set up so marketing can launch a campaign without a developer.

  • 03

    Speed you can measure

    We check Core Web Vitals before launch and keep scripts and apps to what the store actually uses.

Get Started

Let's build your Shopify store

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More ways we can help

Headless Shopify: when it is worth it

Headless Shopify means Shopify keeps the products, checkout and orders, while the storefront your customers see is a separate site. It costs more to build than a theme, so it is worth it only for some stores.

When a theme is enough

  • Your store is mostly a catalogue with product pages and a blog.
  • Your team wants to edit everything inside Shopify.
  • You want to launch quickly and keep running costs low.

When headless pays off

  • Content matters as much as products: lookbooks, guides, editorial pages.
  • You sell in several markets or languages with content that differs per market.
  • The storefront needs features a theme can’t hold, or Shopify is one system among several.
  • Page speed is costing you sales and the theme can’t get faster.

Next.js or Hydrogen?

Hydrogen is Shopify’s own framework for headless stores, hosted on Shopify’s Oxygen. Next.js runs anywhere and fits better when the site also pulls from other systems, like a CMS, a booking tool or your own app. We recommend one after looking at your store.

Shopify or Medusa?

If your pricing, checkout rules or back office don’t fit Shopify, Medusa may be the better base. We build on both and will tell you which fits.

Moving to Shopify

We move stores from WooCommerce and Magento to Shopify, with products, customers and order history moved by script and every URL redirected.