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Tools/HTTP Headers Inspector

HTTP Headers Inspector

See every HTTP header your browser or proxy sends to destination servers. Highlights proxy-revealing headers like X-Forwarded-For and Via.

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Elite residential proxies · No X-Forwarded-For · No Via · Fully anonymous

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What Are HTTP Request Headers?

Every HTTP request your browser sends includes a set of headers— key-value pairs that provide metadata about the request. They tell the server what content types you accept, what language you prefer, whether the connection can be kept alive, and which browser you're using. When you use a proxy, the proxy may add additional headers that reveal the proxy's presence.

Proxy Headers That Reveal Anonymity Leaks

X-Forwarded-ForCritical

Contains the original client IP. If set to your real IP by the proxy, the server sees it.

ViaHigh

Identifies intermediate proxy servers that forwarded the request.

ForwardedHigh

RFC 7239 standard header — carries original client IP, host, and protocol info.

X-Real-IPHigh

Often added by reverse proxies (nginx) to pass the client's real IP to the backend.

Proxy-ConnectionMedium

Non-standard header that signals proxy usage. Elite proxies strip this.

Frequently Asked Questions

What is the X-Forwarded-For header?›
X-Forwarded-For (XFF) is an HTTP header added by proxies to identify the original client IP. If your proxy sends this header with your real IP, the destination server can see your actual address — defeating the purpose of the proxy.
What is the Via header?›
The Via header identifies intermediate proxies that forwarded the request. If present, it tells the server that a proxy is in use, even if your real IP is hidden. Elite (high-anonymity) proxies strip this header.
Which headers reveal proxy usage?›
X-Forwarded-For, X-Real-IP, Via, Forwarded, Proxy-Connection, X-Proxy-Id, and X-Bluecoat-Via are the most common proxy-revealing headers. Elite proxies remove all of these.
What is an elite proxy?›
An elite (high-anonymity) proxy forwards your request without adding any proxy-related headers. The destination server cannot tell a proxy is in use — it sees a normal direct connection.
Does a VPN send proxy headers?›
Generally no. A VPN operates at the network layer (not HTTP), so it doesn't add HTTP headers. However, some corporate VPNs with HTTP inspection may add headers. Typical consumer VPNs do not.