HTTP headers your browser sends
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What are HTTP headers?
With every request, the browser sends short lines that describe it and what it accepts: User-Agent names the browser and operating system, Accept-Language your preferred languages, and Accept-Encoding the compression methods it understands. Websites use them to pick the right language and format, and combine them with your IP address to tell visitors apart.
Sec-CH-UA headers are a newer, more precise version of User-Agent sent by Chromium browsers, and Sec-Fetch headers tell the site the type and source of the request. This table shows a request sent by this page, so Accept and Sec-Fetch differ slightly from a request that opens a new page.
We do not show Cookie or Authorization, or the headers our own proxy server adds. If a proxy on your path adds a header such as Via, it appears here. Your IP address itself is on What is my IP address?
Does User-Agent reveal who I am?
It does not contain your name, but together with your browser language, screen size and IP address it may be enough to tell your device apart from other visitors.
Why does the list differ between browsers?
Each browser decides what it sends. Chrome and Edge send Sec-CH-UA headers; Firefox and Safari do not.
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