See all the headers your browser sends when making HTTP requests.
| Header | Value |
|---|---|
| accept | */* |
| accept-encoding | gzip, br, zstd, deflate |
| host | ipaddress.rocks |
| user-agent | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
| via | 2.0 Caddy |
| x-forwarded-for | 216.73.216.161 |
| x-forwarded-host | ipaddress.rocks |
| x-forwarded-proto | https |
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.
Identifies your browser, operating system, and device. Websites use this to serve compatible content.
Tells the server what content types your browser can handle (HTML, JSON, images, etc.).
Your preferred language. Websites use this to serve localized content automatically.
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.

Your HTTP headers reveal your browser, OS, and language — enough to track you. NordVPN masks your real identity and encrypts all your traffic.