Case study · Theme rebuild
Shopify Theme Migration: rebuilding a bloated theme into clean, modular Liquid
How a hard-to-maintain Shopify theme was rebuilt into clean, modular Online Store 2.0 Liquid, faster and editable, without changing how the store looked.
OS 2.0Modular, editable sections
95+Core Web Vitals
0SEO lost in migration
The problem
A store ran on an old, heavily customized theme that had become slow and fragile. Small content edits required a developer, performance was poor, and the codebase was hard to extend without breaking something.
The approach
- Audited the existing theme to separate what was doing real work from accumulated dead code and unused apps.
- Rebuilt the theme from scratch in clean Liquid with Online Store 2.0 sections and blocks the merchant can rearrange.
- Moved structured content into metafields and metaobjects so editors update pages without touching code.
- Baked Core Web Vitals 95+ and technical SEO into the markup from the first commit.
- Mapped and preserved every URL so the migration carried no SEO loss, with a zero-downtime cutover.
The result
The store moved to a fast, modular theme the team can edit themselves. Performance returned to the green, the codebase became maintainable, and no rankings were lost in the migration. New pages now ship in hours instead of days.