Key Takeaways
1
The fastest way to check what theme a Shopify store uses is with a free online detection tool that scans the store’s source code automatically.
2
You can also inspect the page source manually by searching for “Shopify.theme” or “theme_store_id” to find the theme name or ID.
3
The Shopify Detector Chrome extension identifies Shopify themes and apps instantly as you browse, without leaving the page.

Spotted a Shopify store with a design you love and want to know which theme they’re running? Whether you’re building your first store or redesigning an existing one, knowing what theme a competitor uses gives you a concrete starting point. Here are five reliable methods to identify any Shopify store’s theme, from the quickest option to more technical approaches.

What Is a Shopify Theme and Why Does It Matter?

A Shopify theme is the design template that controls how a store looks and functions. It determines the layout, navigation style, product page structure, and overall visual identity of the site. Themes are built using Shopify’s Liquid templating language, which allows store owners to customize content dynamically.

Themes aren’t just cosmetic. They affect page load speed, mobile responsiveness, and which built-in features are available, like product filtering, mega menus, or quick-view popups. Two stores selling the same products can feel completely different based on the theme alone. That’s why identifying a theme you like is a practical first step when planning your own store’s design.

You can purchase themes from the official Shopify Theme Store, or from third-party marketplaces and independent developers. Some stores run fully custom themes that aren’t available for purchase anywhere.

Method 1: Use a Free Online Detection Tool

The fastest way to find out what Shopify theme a website is using is with an online detection tool. You paste in the store’s URL, and the tool scans the source code to return the theme name, version, and often the apps installed on the store.

Try our free Shopify theme & app detection tool here - it takes about five seconds and works on any live Shopify store.

Online detection tools work by reading the publicly visible source code of a Shopify store and matching the theme fingerprint against known themes in their database. They’re accurate for standard themes from the Shopify Theme Store and most popular third-party themes.

When this method won’t work: If the store uses a fully custom or heavily modified theme, the tool may return “Custom” or “Unknown.” That’s because the theme code doesn’t match any published theme in the database.

Method 2: Inspect the Page Source Code

If you prefer a manual approach, you can find the theme name directly in the store’s HTML source. This works in any browser and doesn’t require any tools or extensions.

Step-by-step instructions:

  1. Visit the Shopify store you want to check.
  2. Right-click anywhere on the page and select “View Page Source” (or press Ctrl+U on Windows / Cmd+Option+U on Mac).
  3. Press Ctrl+F (or Cmd+F) to open the search bar.
  4. Search for Shopify.theme - this will show you a JavaScript object that often contains the theme name and ID.
  5. Alternatively, search for theme_store_id - this returns the numeric ID of the theme in the Shopify Theme Store.

If you find a numeric ID instead of a name, you can search Google for “Shopify theme” followed by that number to find the theme listing.

Tip: Some stores have the theme name visible as an HTML comment near the top of the source code, making it even easier to spot.

Method 3: Use the Shopify Detector Chrome Extension

If you regularly research Shopify stores, a browser extension is the most convenient option. The Shopify Detector Chrome extension instantly identifies the theme and apps running on any Shopify store you visit.

Once installed, the extension works automatically in the background. When you land on any Shopify store, it detects the theme name, installed apps, and other key details. You don’t need to paste URLs or open any separate tools - just browse normally and the information appears with one click.

The extension is free and lightweight, so it won’t slow down your browsing. It’s the ideal solution if you’re constantly scouting competitor stores or looking for theme inspiration.

Method 4: Use Chrome DevTools

For developers or anyone comfortable with browser developer tools, Chrome DevTools can reveal detailed theme information beyond what simpler methods show.

How to use this method:

  1. Visit the Shopify store and press F12 (or Ctrl+Shift+I / Cmd+Option+I) to open DevTools.
  2. Go to the Console tab and type Shopify.theme, then press Enter. This outputs an object containing the theme’s name, ID, and role (e.g., “main” for the published theme).
  3. You can also go to the Sources tab and browse the assets folder to see theme-specific CSS and JavaScript files, which sometimes include the theme name in filenames.

This method gives you the most raw information and is useful if you want to understand not just which theme is installed, but how it’s been customized.

Method 5: Ask the Store Owner

It sounds simple, but reaching out to the store owner directly can work, especially for smaller businesses. Many Shopify entrepreneurs are happy to share what theme and tools they use. You can contact them through their store’s contact page, via social media, or through Shopify community forums.

This method is most useful when the store clearly has a custom or heavily modified design that automated tools can’t identify. The owner may also share useful context about their experience with the theme - things like support quality, customization difficulty, and performance.

What to Do When the Theme Shows as “Custom” or “Unknown”

If every method you try returns “Custom” or gives no clear answer, the store is likely running a theme that was built from scratch or modified so heavily that it no longer matches any published theme.

In that case, you have a few options:

  • Look for similar themes. Browse the Shopify Theme Store and filter by industry or layout style. You may find a published theme that closely resembles the design you like.
  • Hire a developer. If you’re set on replicating a specific look, a Shopify developer can build a custom theme based on the design elements you want.
  • Check third-party marketplaces. Themes from independent developers may not always be detected by automated tools but are widely used.

Will Your Store Look the Same if You Use the Same Theme?

Not necessarily. A Shopify theme provides the structural foundation, but the final look depends heavily on customization. Store owners change colors, fonts, images, section layouts, and add custom code on top of the theme. Two stores running the same theme can look completely different.

Think of a theme as a starting point, not a finished design. You’ll still need high-quality product photography, a thoughtful color palette, and well-written copy to make your store stand out.