Oct 28, 2025 · The HTTP User-Agent request header is a characteristic string that lets servers and network peers identify the application, operating system, vendor, and/or version of the …

Often considered useful in networks is the ability to identify and distinguish the software facilitating a network session. For this reason, the User-Agent HTTP header exists to identify the client …

Sep 30, 2024 · The HTTP header User-Agent is a request header that sends a characteristic string to web servers, allowing them to identify the Operating System (OS) and browser of the …

Oct 22, 2025 · The User-Agent header is a part of an HTTP request that identifies the client software making the request. It tells the server which browser, device, and operating system …

From a technical point of view, examining the User-Agent string is straightforward and can be done using navigator.userAgent in JavaScript or the HTTP User-Agent header on web servers.

Jun 2, 2022 · The HTTP User-Agent header is used to provide information about the client’s browser and operating system to the server in order for the server to tailor the HTTP response …

Jun 7, 2017 · The User-Agent request header contains a characteristic string that allows the network protocol peers to identify the application type, operating system, software vendor or …

A user agent is a text string sent by your browser or script during an HTTP request to identify the client’s software and operating environment to the server.

User-Agent Header The User-Agent header is a line of text that a client (such as a web browser, script, or bot) sends with an HTTP request to identify itself to the server.

Dec 17, 2025 · One of the biggest problems with browser detection based on UA strings is that browsers and user agents routinely pretend to be another browser, or include information …