HTTP Headers Checker
View the HTTP headers your browser sends to websites
Your HTTP Headers
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Privacy Analysis
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Important Headers for Privacy
X-Forwarded-For
Can reveal your real IP when using a proxy. A good proxy should remove or mask this header.
User-Agent
Identifies your browser and OS. Can be used to fingerprint your device.
Accept-Language
Shows your preferred language, which can reveal your real location.
Via
Added by some proxies, revealing that you're using a proxy server.