Cloudflare checker
Cloudflare is a CDN and security layer that speeds up and protects sites from the network edge. Enter any website below to check whether it uses Cloudflare. The check is free and needs no signup.
Enter a website address and press Scan.
Detection reads the page HTML, response headers and cookies. Tools that load later or run only on the server can be missed.
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How we detect Cloudflare
We look for a cf-ray response header, a server header that says cloudflare, or the __cf_bm cookie.
Detection reads what the page sends to a visitor. A site can hide Cloudflare, or use it only on the server, and then we can't see it.