What Shopify apps can be detected?
Stackcrawler can detect Shopify apps that leave visible signals on the storefront.
These signals may include JavaScript files, CSS files, app embed blocks, storefront widgets, tracking scripts, product review widgets, chat tools, popup tools, upsell widgets, analytics tags, and other front-end app assets.
The detector works best for apps that modify the public storefront, such as review apps, loyalty apps, product recommendation tools, subscription widgets, bundles, popups, chat apps, page builders, search apps, and marketing integrations.
Some Shopify apps run mostly in the Shopify admin or checkout, so they may not expose enough public signals to identify from the storefront alone.
Common Shopify app signals
Shopify apps often leave clues in the page source, loaded scripts, stylesheets, image paths, app blocks, or storefront markup.
A detector looks for these patterns and matches them against known app signatures.
- Script URLs loaded from known Shopify app domains
- CSS files or JavaScript files with app-specific names
- Shopify app blocks comments in the page source
- HTML elements with app-specific IDs or class names
- Widgets for reviews, subscriptions, loyalty, chat, search, or upsells
- Requests to third-party domains used by Shopify apps
- Tracking pixels, analytics tags, or marketing scripts
Apps our detector can identify
Our Shopify app detector can identify many popular app categories when they expose public storefront signals.
Detection depends on the app, the store’s theme, and how the app is installed.
- Product review apps
- Subscription and recurring order apps
- Upsell, cross-sell, and bundle apps
- Search and product filter apps
- Chat and customer support apps
- Email, SMS, and pop-up marketing apps
- Loyalty and rewards apps
- Page builder and landing page apps
- Analytics, pixels, and tracking tools
- Shipping, delivery, and order tracking widgets
If an app loads scripts, widgets, or visible storefront elements, there is a better chance it can be detected.
If it runs only in the background or within the Shopify admin, it may not appear in the scan.
Why some Shopify apps cannot be detected
Not every Shopify app can be detected from the outside.
A storefront scan can only inspect public signals available in the page source, rendered HTML, scripts, stylesheets, and network-visible assets.
Some apps are difficult or impossible to detect because they do not leave unique public markers.
Others may be hidden behind server-side logic, loaded only after a customer action, or used only inside the Shopify admin.
- The app runs only in the Shopify admin
- The app affects backend workflows rather than the storefront
- The app is loaded only after login, checkout, cart changes, or user interaction
- The store owner has removed or customized the app’s default markup
- The app uses generic scripts or domains that are shared by many tools
- The app’s assets are bundled into the theme and no longer show a clear signature
Because of this, Shopify app detection should be treated as a strong clue, not a complete list of every app installed on a store.
Shopify app detector vs Shopify theme detector
A Shopify app detector and a Shopify theme detector look for different things.
A Shopify app detector checks for apps and third-party tools used on the storefront, while a Shopify theme detector looks for the theme or design framework powering the store.
| Tool | What it detects | Common signals |
|---|---|---|
| Shopify app detector | Apps, widgets, integrations, and third-party tools | Scripts, app blocks, widget markup, app domains, tracking tags |
| Shopify theme detector | The Shopify theme or storefront design setup | Theme assets, theme IDs, CSS paths, Liquid output, theme-specific markup |
Use the app detector to see which tools a Shopify store uses for reviews, popups, subscriptions, search, chat, analytics, or upsells.
Use the theme detector to understand the store’s design foundation.
How to manually check Shopify apps
You can also manually look for Shopify apps by checking the page source and the browser’s developer tools.
This takes more time than using a detector, but it can help confirm which tools are active on a storefront.
- Open the Shopify store in your browser. Visit the storefront page you want to inspect, such as the homepage, a product page, a collection page, or the cart page.
- View the page source. Right-click the page and choose “View Page Source”, or use
Ctrl+Uon Windows/Linux andCmd+Option+Uon Mac. - Search for app block markers. Look for strings such as
shopify://apps/, app names, widget IDs, or comments related to app embeds. - Check loaded scripts and stylesheets. Open Developer Tools, go to the Network tab, reload the page, and look for JavaScript or CSS files loaded from third-party app domains.
- Inspect visible widgets. Review widgets, chat bubbles, subscription boxes, search overlays, loyalty panels, and pop-up forms often reveal the app name in their HTML classes, scripts, or domains.
- Compare signals across page types. Some apps only load on product, cart, or collection pages, so check more than one page before deciding that an app is not present.
Manual checks are useful, but they are not perfect.
Some apps hide their branding, load dynamically, or use generic assets, so combining manual inspection with a Shopify app detector usually gives the best result.
What does a Shopify app detect?
A Shopify app detector detects Shopify apps used on the front end.
Our tool checks for Shopify apps that leave detectable storefront signals, such as scripts, app blocks, widgets, stylesheets, and known app domains.
How can we detect a Shopify app by looking at the page source?
It is a straightforward process, but it is a bit more work than using an online tool.
Here is how you can detect an app by looking at the page source:
- Open the page source: Right-click on the webpage and select “View Page Source” or press
Ctrl+U(Windows/Linux) orCmd+Option+U(Mac). - Check meta tags and comments: Search for “
<!-- BEGIN app block: shopify://apps/“. The app’s name (or slugged name) is right after/apps/. - Search for app names: Look for script and style tags referencing known Shopify app URLs. Common patterns include URLs containing the app name or specific domains associated with Shopify apps. E.g.
<script src="https://cdn.shopify.com/s/files/1/XXXX/XXXX/t/XX/assets/app.js">.
You can read our in-depth guide to detecting Shopify apps here.
What is a Shopify Theme?
A Shopify theme is the framework that determines the design and layout of your Shopify website.
It enables you to display content and add specific features to your store.
There is a wide selection of themes available, and we have explored many of them.
Our tool above also detects Shopify themes.
Shopify App Detector FAQ
Is the Shopify app detector free?
Yes. Stackcrawler’s Shopify app detector is free to use.
Enter a Shopify store URL and the tool will scan the public storefront for detectable app signals.
You do not need access to the store’s Shopify admin, source files, or private app settings.
The detector only checks publicly available information from the storefront.
Can it detect every Shopify app?
No Shopify app detector can identify every app installed on a store.
Some apps leave clear public signals, while others run only in the Shopify admin, checkout, backend workflows, or server-side logic.
The detector works best when an app loads visible storefront elements, app blocks, JavaScript files, CSS files, widgets, or third-party domains.
If an app does not expose a unique public signal, it may not be possible to detect it externally.
How does Shopify app detection work?
Shopify app detection works by scanning a store’s public storefront for known app signals.
These can include scripts, stylesheets, app embed blocks, widget markup, tracking tags, network requests, and third-party domains associated with Shopify apps.
Stackcrawler compares those signals against known app patterns and returns the apps it can identify.
A match usually means the app or one of its storefront integrations is active on the page being scanned.
Can I detect Shopify themes too?
Yes. Shopify apps and Shopify themes are different, but both can leave public storefront signals.
Apps typically appear via widgets, scripts, app blocks, and third-party integrations, while themes are typically identified by theme assets, CSS paths, Liquid output, and theme-specific markup.
To check the design foundation of a Shopify store, use our Shopify theme detector. To check storefront apps and integrations, use the Shopify app detector on this page.