What HTTP Headers is my browser sending?

Updated at: Jun 25, 2024

Every time your web browser opens a web page, it sends a "request" for that page. Part of that request includes a series of "headers".

Here is a list of the 6 headers your browser sent when requesting this page.

ACCEPT text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
CONTENT-LENGTH
CONTENT-TYPE
HOST www.whatismybrowser.com
REFERER https://www.mikrocontroller.net/topic/574650
USER-AGENT Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0

These headers may vary from site to site (in particular the HOST and COOKIE headers!) depending on your settings.

If you're curious and want to learn more about HTTP (a protocol which the World Wide Web relies on) and HTTP Headers, please read the Wikipedia pages on Hypertext Transfer Protocol and List of HTTP header fields.

Curious about Client Hints? We detect them too!

Client Hints are the new approach to identifying web browsers, built to eventually replace user agents. We're following the development and switch to using them closely. We've also built a tool to detect client hints that your web browser is sending.

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