Storefront and pages

Shopify Theme Development and Customization

Custom Shopify theme development and theme customization, with Online Store 2.0 sections your team can edit and a storefront built to stay fast.

Start a project See the work

Your theme is the storefront every customer sees before they ever reach checkout. Most stores run a marketplace theme with a few tweaks. The ones that stand out have a theme shaped around how they actually sell.

Custom theme or customized theme

There are two honest ways to a better storefront. Customize a strong existing theme, adding the sections, templates and features your brand needs, or build a custom theme from scratch when your design genuinely does not fit any theme’s structure. We help you pick, then build it properly.

Built for your team, not just for launch

We build on Online Store 2.0: sections and blocks your team can rearrange in the theme editor, templates for different product types, and settings that make sense to the people using them. The goal is a storefront you can keep changing without filing a ticket every time.

Fast, and fully yours

Speed is a design decision. We keep Liquid lean, ship as little JavaScript as possible and build features natively instead of stacking apps, so the theme stays fast as the catalogue grows. You get clean, documented code, and the theme is yours to keep.

Going deeper on one page? See homepage design, product page customization and cart customization.

What we build

Custom theme builds

A theme designed and built for your brand, not a marketplace theme with the colours changed.

Theme customization

New sections, templates and features added to the theme you already run, without breaking what works.

Online Store 2.0 sections

Flexible sections and blocks your team can rearrange in the theme editor, with no developer needed.

Speed and Core Web Vitals

Lean Liquid, careful JavaScript and optimised media, so the storefront stays fast as it grows.

Questions, answered

Should we build a custom theme or customize an existing one?

Most brands are best served by customizing a strong existing theme and building the pieces that make them different. A fully custom theme makes sense when your design or merchandising genuinely does not fit any theme's structure. We will tell you which one you need.

Can our team edit the theme after you build it?

Yes. We build with Online Store 2.0 sections and blocks, so your team can change content, images and layout in the theme editor without touching code.

Will theme updates overwrite your customizations?

We keep customizations structured and documented, so a theme vendor's update can be merged in without losing your work.

How do you keep a custom theme fast?

By building natively instead of stacking apps. Lean Liquid, minimal JavaScript, responsive images and careful third-party scripts, measured before and after launch.

Ready to build a store worth talking about?

Tell us where your store is today and where you want it to go. We reply within two working days with a clear next step.

Start a project hello@thecheckoutagency.com