What is a WhatCMS checker?
A WhatCMS checker tells you which content management system (CMS) a website is built with — WordPress, Shopify, Joomla, Drupal, Wix, Webflow — or whether it is custom code.
free whatcms detector
What CMS is this site using?WordPress, Shopify, Joomla, or custom code.
Paste any address. WebDNA reads the page code, server headers and script fingerprints to identify the CMS, exact theme, plugins, programming language, framework and hosting.
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WhatCMS: frequently asked questions
How does WebDNA detect the CMS?
It reads the page code, server headers, cookies and JavaScript fingerprints, then probes public files such as theme stylesheets and plugin readmes to confirm the exact theme and plugin names.
Can it find WordPress themes and plugins?
Yes. WebDNA shows the exact theme name and version (including child themes) and lists the public plugins it can see, with versions when available.
Is it free?
Yes, WebDNA is free with no sign-up.