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
🟡 Moderateen-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
🟡 Moderatehttps://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 RiskMozilla/5.0 (compatible; archive.st/1.0; +https://archive.st)
Identifies your browser, operating system, and device type
x-forwarded-for
🔴 High Risk146.148.80.64
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.