Free Tool

Tech Stack Checker

See what any website is actually built with — platform, framework, analytics, CDN and hosting.

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Free, no account needed. We fetch the page once and read the HTML — nothing is changed on your site.

How detection works

We read the response headers and the page source for known signatures — file paths, script hosts, data attributes and header names that each platform leaves behind. It is evidence, not certainty: a site can hide or proxy most of it.

Why it is useful

Knowing the stack tells you the constraints. A WordPress site has a plugin attack surface. A JavaScript-rendered site may be invisible to AI crawlers. No CDN means every visitor waits on one server in one location.