Website Technology Checker
Find out what any website is built with — CMS, frameworks, analytics, CDN and server — from one URL. Free BuiltWith-style checker.
Enter a URL and we fetch the page once, then match its headers, cookies and HTML against a signature map to reveal the technologies it uses.
Detection is signature-based and best-effort: it can miss technologies loaded only after interaction, and cannot see server-side code.
Despre Website Technology Checker
The Website Technology Checker tells you what a site is built with. Enter a URL, and the server fetches that page once and matches its response headers, its cookie names, its meta generator tag and its HTML source against a bundled signature map of about 70 technologies grouped into eleven categories.
Results are sorted into CMS platforms, e-commerce systems, back-end frameworks, JavaScript libraries, UI frameworks, analytics, marketing tools, CDN and hosting, web servers, languages and a catch-all group. Every detection is shown with the evidence that triggered it — the header, cookie, generator tag or HTML fragment — so you can judge each match yourself.
It is a BuiltWith-style fingerprinter, which means it is fast and free but inherently best-effort. Only the fetched page is inspected, up to 400,000 characters of its source: there is no crawling, no script execution and no login. Lookups are rate-limited and results cached for a few minutes.
Cum să utilizați Website Technology Checker
- Enter the address of the page you want to fingerprint, for example https://example.com.
- Click “Detect technologies” and let the server fetch the page once.
- Browse the detections grouped by category: CMS, e-commerce, frameworks, analytics, CDN, server and more.
- Open the evidence next to each item to see exactly which header, cookie or HTML fragment matched.
- Check the Server and X-Powered-By lines for what the origin reveals about its stack.