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HTTP Headers Viewer

See exactly what information your browser sends to websites with every request, including User-Agent, language preferences, and more.

Request Summary

Your IP Address

146.148.80.64

Protocol

https

Request Method

GET

Headers Sent

24

HTTP Request Headers

Headers your browser sends with each request

accept

*/*

Content types your browser can process

accept-encoding

gzip, br

Compression methods your browser supports

accept-language
🟡 Moderate

en-US,en;q=0.9

Your preferred languages for content

cdn-loop

cloudflare; loops=1

cf-connecting-ip

146.148.80.64

cf-ipcountry

US

cf-ray

a21526568ec31101-ORD

cf-visitor

{"scheme":"https"}

cf-warp-tag-id

c66f9299-9517-4153-a6f2-dc58d531447a

connection

keep-alive

Connection management preferences

host

whatismyip.io

The domain name of the server being requested

priority

u=1, i

referer
🟡 Moderate

https://whatismyip.io/http-headers

The page that linked to this request

sec-ch-ua
🟡 Moderate

"Chromium";v="149", "Not)A;Brand";v="24"

User agent client hints (Chrome)

sec-ch-ua-mobile

?0

Whether you are on a mobile device

sec-ch-ua-platform
🟡 Moderate

"Windows"

Your operating system

sec-fetch-dest

empty

The destination of the request

sec-fetch-mode

cors

The mode of the request

sec-fetch-site

same-origin

The relationship between request origin and target

user-agent
🔴 High Risk

Mozilla/5.0 (compatible; archive.st/1.0; +https://archive.st)

Identifies your browser, operating system, and device type

x-forwarded-for
🔴 High Risk

146.148.80.64

Your IP address (via proxy)

x-forwarded-host

whatismyip.io

x-forwarded-port

3000

x-forwarded-proto

https

Original protocol (HTTP/HTTPS)

About HTTP Headers

HTTP headers are metadata sent with every web request. They reveal information about your browser, device, and preferences. Some headers like User-Agent and Accept-Language can be used for fingerprinting.

Common HTTP Headers

User-Agent

Browser name, version, and operating system

Accept-Language

Your preferred language(s) for content

Referer

The page you came from (can reveal browsing history)

DNT (Do Not Track)

Your tracking preference (often ignored by websites)

Privacy Implications

HTTP headers reveal a surprising amount about you. Your User-Agent alone can narrow down your device to a small group of users. Combined with language preferences and other headers, websites can often uniquely identify you.

Headers marked with "Privacy Risk" are particularly identifying. The Referer header is especially concerning as it reveals which site you were previously visiting.

Frequently Asked Questions

What are HTTP headers?

HTTP headers are key-value pairs sent with every web request and response. They carry metadata about the request, such as the content type, caching preferences, authentication tokens, and information about your browser.

Can websites see all my headers?

Yes, websites receive all HTTP headers your browser sends. This includes your User-Agent (browser info), Accept-Language (preferred languages), and potentially sensitive information like cookies and authentication tokens.

How can headers be used for tracking?

Headers like User-Agent, Accept-Language, and Accept-Encoding create a partial fingerprint. Combined with other data, they help identify unique visitors. Some headers like Referer also reveal your browsing history.

Can I modify or hide HTTP headers?

Browser extensions can modify some headers. Privacy browsers like Tor standardize headers to reduce fingerprinting. However, completely hiding headers would break most websites.

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