HTTP Request Headers

See all the headers your browser sends when making HTTP requests.

HeaderValue
accept*/*
accept-encodinggzip, br, zstd, deflate
hostipaddress.rocks
user-agentMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
via2.0 Caddy
x-forwarded-for216.73.216.161
x-forwarded-hostipaddress.rocks
x-forwarded-protohttps

What Are HTTP Headers?

HTTP headers are metadata sent with every HTTP request and response. They contain information about your browser, accepted content types, language preferences, cookies, and more. Servers use these headers to tailor responses to your device and preferences.

Key Headers Explained

User-Agent

Identifies your browser, operating system, and device. Websites use this to serve compatible content.

Accept

Tells the server what content types your browser can handle (HTML, JSON, images, etc.).

Accept-Language

Your preferred language. Websites use this to serve localized content automatically.

Privacy Implications

Your HTTP headers create a partial fingerprint of your browser. The combination of User-Agent, Accept-Language, and other headers can be used to track you across websites even without cookies. Using a VPN and browser privacy extensions can help reduce header-based fingerprinting.

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