Is This Site Shopify? Free Shopify Store Checker With Proof

Here is what a real verdict looks like.

A frozen check on kith.com. The verdict is a clear yes, backed by five independent Shopify signals visible in the public HTML.

kith.com

Yes · Shopify Plus · confidence 100%

Shopify CDN host found

cdn.shopify.com/s/files/… (62 asset references)

Strong
Shopify JavaScript global

window.Shopify = { shop: "kith.myshopify.com", … }

Strong
Storefront API endpoint reachable

kith.com/api/2024-04/graphql returns 200

Strong
Shopify cookies set

_shopify_y, _shopify_s, cart_currency

Strong
Liquid template markers

shopify-section-… classes on 12 root elements

Strong
Shopify Plus indicators

checkout.kith.com custom checkout domain

Plus

Run your own check above to see the same evidence list for any URL.

What the Shopify Checker looks for.

A verdict requires several signals agreeing, not one. Here is what the checker reads from the public HTML:

Shopify CDN host in image, script, and stylesheet URLs (cdn.shopify.com).
Shopify JavaScript global (window.Shopify) and its shop, locale, and currency properties.
Shopify cookies set on the response: _shopify_y, _shopify_s, cart_currency, _secure_session_id.
Storefront API endpoint reachable at the site's own domain (/api/2024-XX/graphql).
Liquid template markers in the rendered HTML: shopify-section classes, theme-extension IDs.
Custom checkout domain (checkout.<brand>.com): a strong Shopify Plus indicator.
Server response headers: x-shopid, x-shopify-stage, x-storefront-renderer-rendered.
Storefront image proxy patterns (shopifycdn.com, shopify-cdn.com).

How the Shopify Checker works.

01

Fetch the public page.

A single GET request retrieves the homepage HTML and response headers. No login required, no admin access, no API token.

02

Score every signal.

Each of the eight Shopify signals is scored independently. Strong signals (CDN, JS global) count for more than weak ones (cookie hints). A verdict requires a quorum.

03

Issue the verdict with proof.

The result is a plain yes, no, or likely. Every signal that contributed is rendered with the exact literal evidence from the response, so you can verify it.

When to run a Shopify check.

B2B sales qualification.

Selling apps, themes, or services that only fit Shopify? A check tells you in seconds whether the prospect is on platform, before you spend an hour writing a pitch.

Partnership and brand verification.

Confirm a brand's stack before agreeing to a partnership, sponsorship, or wholesale arrangement. The verdict and evidence are something you can show to a partner or include in a contract.

Migration and competitive research.

Map every site in a niche by platform. Quickly understand the Shopify share inside a vertical, the competitors moving onto or off the platform, and the headless adoption rate.

Investor and acquisition diligence.

Acquiring an ecommerce brand? Confirming Shopify changes the migration plan, the integration cost, and the resale value. The check is a 10-second first step in diligence.

What the Shopify Checker cannot tell you.

The verdict answers one question well. A few adjacent questions require other tools.

Revenue or order volume. The check confirms the platform. It does not say how much the store sells. Use the Revenue Calculator to model that from traffic and AOV.
Apps installed. A Shopify-yes verdict does not enumerate the marketing stack. Run the App Detector to see the apps, pixels, and theme embeds.
Subdomain ownership. A brand might run shop.brand.com on Shopify while the main brand.com is on a different platform. Check each URL separately.
Pre-launch and password-protected stores. The protected page is a Shopify login, so the verdict correctly identifies the login as Shopify, but cannot inspect the underlying storefront.
Sites behind aggressive privacy proxies. Some perimeter products (Cloudflare Workers, custom edge layers) strip Shopify signals before the response reaches the browser. The checker will read the proxied response.

Frequently asked questions.

Is the Shopify Checker free?

Yes. Every check is free, with no daily limit, no signup, and no API key. The tool reads the public HTML the browser already has access to.

How does the Shopify Checker know if a site is really Shopify?

It looks for multiple independent signals that only a Shopify storefront produces: the cdn.shopify.com asset host, the window.Shopify global, Shopify-specific cookies, the Storefront API endpoint, and Liquid template markers. A verdict requires several signals agreeing, not one.

What does a headless Shopify storefront look like to the checker?

Headless storefronts (Hydrogen, Next.js, Remix) often hide the obvious Shopify signals but still leak the Storefront API host or Shopify image CDN. The checker labels these as Shopify Headless when the secondary signals add up.

Can I check a site that is behind a password?

Password-protected Shopify stores serve a Shopify login screen rather than the storefront. The checker correctly identifies the login screen itself as Shopify, but cannot inspect the underlying store.

Why does the verdict sometimes say “likely” instead of yes?

Likely means the strongest signals (CDN host, JS global) are missing or stripped, but secondary signals still point to Shopify. This is the typical pattern for headless storefronts or stores using an aggressive privacy proxy.

How is this different from Wappalyzer or BuiltWith?

Wappalyzer and BuiltWith are generalist technology lookups across thousands of platforms. The Shopify Checker is specialist: it does one thing and surfaces the exact evidence behind the verdict, which generalist tools usually do not.

Five more free Shopify tools, same evidence-first approach.