Website tech stack checker

See what any website is built with. Enter a URL and we detect the CMS, JavaScript framework, ecommerce platform, analytics, hosting and CDN from its public code and response headers.

How it works

We fetch the page's public HTML and response headers and match them against known fingerprints (script and stylesheet URLs, the generator meta tag, cookies, and server headers). It only sees what any visitor's browser sees, so heavily server-rendered or proxied sites may reveal less. Nothing is stored.