& WordPress Theme Detector
What is this website built with? Find the CMS or site builder behind any page, plus the WordPress theme and page builder it uses, in seconds. Free, no signup.
Free, no signup. We read the public page source.
Knowing the platform tells you a lot at a glance: how a site was built, how easy it is to change, and which tools and integrations are even possible. Agencies use it to size up a prospect before a call, freelancers to scope a build, and marketers to understand a competitor's stack.
It's also the first step to getting tracking right, because every CMS handles tags differently. When you're ready, TrackingCoder generates the exact tracking for that platform, no developer required.
It reads a web page's public source and identifies the content management system or website builder behind it: WordPress, Shopify, Wix, Squarespace, Webflow, Framer, Drupal, Joomla, Magento, BigCommerce, PrestaShop, Ghost and more. For WordPress sites it also detects the active theme and the page builder in use (Elementor, Divi, WPBakery, Beaver Builder, Bricks, Gutenberg and others).
WordPress serves theme assets from a predictable path (/wp-content/themes/<theme>/), so the theme is visible in the page source. We read it from there and, where the theme allows it, pull the friendly theme name from its stylesheet header.
Yes, it's completely free with no signup. Paste a URL and you get the result instantly.
It's very reliable for mainstream platforms, which leave clear fingerprints in the page source. Some custom-built, headless or heavily-cached sites hide those clues, in which case we'll tell you no known CMS was detected rather than guess.
Any public web page reachable over http or https. Pages behind a login or aggressive bot protection may not load.
Knowing the platform is the first step to setting tracking up correctly, because every CMS handles tags differently. Once you know what a site runs, TrackingCoder generates the exact GA4, Meta, Google Ads, LinkedIn and Microsoft tracking for that platform, with no code.
More free tools: Website Tracking Checker · All free tools