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The first question a web developer asks about any site — what's it built with? — answered from the page's own source: CMS, builder, framework, server, CDN, analytics, each match shown with the fingerprint that triggered it. Best-effort by nature, and labelled that way.
Reads the fingerprints in the page's HTML and headers — the same information view-source shows any visitor. One fetch, nothing executed, nothing stored.
Type or paste a public web address. Nothing about your own files or device is involved — only the page you name.
This is one of the few Programs tools that can’t run on your device — browsers deliberately can’t read other websites. Our server fetches the page and sends the result straight back: nothing is stored, and the address is never logged or put into analytics.
Take the result to your clipboard, or save it as a file. No copy is kept on our side — there is no storage for one to sit in.