CMS Detector — What CMS Is This Website Using?

Find out what CMS, e-commerce platform, or website builder any site is running. Our free CMS detector inspects HTML markup, HTTP headers, asset paths, and meta tags to identify WordPress, Shopify, Wix, Webflow, Squarespace, Drupal, Joomla, Ghost, and dozens more — instantly and without signup.

How CMS detection works

We look for tell-tale signs: WordPress drops /wp-content/ in asset URLs, Shopify exposes a cdn.shopify.com asset domain, Webflow ships a w-* class prefix, Wix uses a parastorage.com CDN, Ghost serves /assets/ from a known path. Combined signals give a high-confidence answer.

Why detect a competitor's CMS

Choose the right tech for a similar project, qualify an agency lead by CMS expertise, plan a migration, or estimate the build time and licensing cost of replicating a site.

Limits of CMS detection

Headless setups (Next.js + Sanity, Astro + Strapi) often only show the frontend framework. Heavy customisation can strip default markers. We report the most likely platform plus secondary signals.

Popular platforms our CMS detector recognises
PlatformPrimary signalCategory
WordPress/wp-content/ asset pathCMS
Shopifycdn.shopify.comE-commerce
Wixstatic.wixstatic.comWebsite builder
Squarespacestatic1.squarespace.comWebsite builder
Webfloww-* class prefixWebsite builder
Ghostghost.css assetCMS / blog
DrupalX-Generator: Drupal headerCMS
Joomla/media/jui/ asset pathCMS
MagentoMage.Cookies cookieE-commerce
BigCommercecdn.bigcommerce.comE-commerce

Frequently Asked Questions

What CMS is this site using?

Enter the URL above. We inspect markup and headers and report the most likely CMS along with secondary signals.

Can the CMS detector identify headless sites?

It can usually detect the frontend framework (Next.js, Gatsby, Astro). The headless backend (Sanity, Strapi, Contentful) is rarely fingerprintable from the public HTML.

Why does CMS detection fail on some sites?

Heavy customisation removes default markers. Aggressive caching strips headers. In those cases we report 'Custom / unknown'.

Is the CMS detector free?

Yes — free, unlimited, no signup.

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