Resources
A running list of tools and references worth keeping in your back pocket. Not exhaustive, just things that have proven genuinely useful.
Documentation
Section titled “Documentation”Shopify Docs The official source of truth for everything from Liquid to the Admin API. Worth bookmarking the API reference section separately. You’ll be back there often.
Liquid Reference The complete index of every Liquid object, tag, and filter available in Shopify themes. Bookmark the objects page specifically — it’s the one you’ll reach for most when writing or debugging templates.
Shopify Admin API Reference The GraphQL reference for the Admin API. Useful once you’re building integrations or automations that go beyond what the admin UI can do.
Polaris Design System Shopify’s design system, primarily aimed at app developers. The component library and UX guidelines are worth reading even if you’re only doing theme work — understanding how Shopify thinks about UI patterns helps you build storefronts that feel coherent with the ecosystem.
Shopify CLI The command-line tool for pulling, pushing, and previewing themes locally. Essential for local theme development — covered in the Editing a Theme Locally guide.
Shopify Theme Inspector A Chrome extension built by Shopify that adds a flame graph to your browser DevTools, showing exactly how long each Liquid render takes. Invaluable when tracking down performance problems on a storefront.
VS Code The go-to editor for theme development. Free, fast, and has excellent extensions for Liquid syntax highlighting and formatting.
ImageOptim (macOS) / Pinga (Windows) Desktop apps for compressing images before they go anywhere near your theme. Unoptimised images are one of the most common and easily fixed performance problems on Shopify stores.
References
Section titled “References”The Unofficial Super Shopify Developer Reference Desk 3000 Created by Important Labs, this is exactly what it sounds like. A massive, brilliantly curated hub of bookmark links spanning APIs, Liquid cheat sheets, and GitHub integrations that are otherwise scattered all over the internet. Worth spending an hour with when you first come across it.
Shopify Online Store Speed Report Shopify’s built-in speed report benchmarks your store against others in your category. If you’re doing theme work, check this before and after significant changes. Slow stores lose customers and rank lower in search.
GitHub
Section titled “GitHub”Dawn Theme Repository While technically an official Shopify resource, many developers miss the real value of its GitHub page. Digging into the commit history, pull requests, and active issues of Dawn (Shopify’s reference theme) is a masterclass in modern Liquid architecture and best practices. Seeing how Shopify’s own team approaches problems is more instructive than most tutorials.
Shopify Theme Check The linter for Shopify themes. Catches Liquid errors, deprecated tags, performance anti-patterns, and accessibility issues before you push. Available as a VS Code extension (via the official Shopify Liquid extension) and as a standalone CLI tool. Run it before every push.