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 requesting user agent.
Find out your user agent string, browser, opera system, device and more with this tool. Learn what a user agent is and how it is used for feature detection and compatibility.
I want to detect Chrome OS with Javascript, and I'm using navigator.userAgent for this. Now, I'm running Chrome OS, and my navigator userAgent is Mozilla/5.0 (X11; CrOS armv7l 6680.78.0) AppleWeb... More on stackoverflow.com
The extension enables user-agent spoofing on specific domains only; it is conversely possible to exclude certain domains from spoofing. Check the Options page for more info. 5. You can set per-site user-agent strings 6. There is an option to randomize user-agent strings. 7.
The Navigator.userAgent read-only property of the Navigator interface returns the User-Agent (UA) string for the current browser.
What is an user-agent? The User-Agent request-header field contains information about the user agent originating the request. This is for statistical purposes, the tracing of protocol violations, and automated recognition of user agents for the sake of tailoring responses to avoid particular user agent limitations.
This is a simple utility for users who want to discover the 'user-agent' given by the device by default - "Display browser User-Agent and other useful device info." Bloatware is an odd description for a 1.37MB app.
The user agent string format is currently specified by section 10.1.5 of HTTP Semantics. The format of the user agent string in HTTP is a list of product tokens (keywords) with optional comments. For example, if a user's product were called WikiBrowser, their user agent string might be WikiBrowser/1.0 Gecko/1.0. The "most important" product component is listed first. The parts of this string ...
Understand user agents, their role in bot detection, and how to customize them ethically for scraping and automation. Get tips and tools for testing in 2025.
It's a short, technical description of the web browser, operating system, (and maybe mobile device) that you're using as you access the internet. Your web browser sends it to every website you visit.
With this extension, you can quickly and easily switch between user-agent strings. Also, you can set up specific URLs that you want to spoof every time. Please note that this does not provide improved privacy while browsing the Internet and that some sites might have other means to figure out that the browser is not what it pretends to be.
A user agent, or UA, is a string of information that identifies a user’s browser and operating system. When you visit a website, your Internet browser sends information to the web page about your web browser, operating system, device, screen resolution, and more.
User-agent checker instantly tells your browsers user agent. User-agent is the identifier which lets the server know what browser is requesting the resource or what operating system the request initiator uses.
The User-Agent (UA) string is contained in the HTTP headers and is intended to identify devices requesting online content. The User-Agent tells the server what the visiting device is (among many other things) and this information can be used ...
The user-agent is sent by the browser to a web server with each network request, and it’s supposed to show information regarding the user’s system.
A user-agent is a string of text, numbers, and symbols that specify the details of a client accessing a server.
User Agent is a text string that web browsers and other client applications send to web servers as part of HTTP request headers to identify themselves.
To better understand what hosts are using this specific user agent string, I can take a look at the raw data. The data used for this search was only the last 7 days. # read web honeypot json files # cat /logs/webhoneypot*.json # search for values that do not have a blank user agent # jq -r 'select(.useragent!="")' # search for our specific user agent string (Windows 7, Firefox 22) # jq -r 'select(.useragent[]=="Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0")' # output the source IPs, sorted by the number of times the source IP was seen # jq -r .sip | sort | uniq -c | sort -n cat /logs/webhoneypot*.json | jq -r 'select(.useragent!="")' | jq -r 'select(.useragent[]=="Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0")' | jq -r .sip | sort | uniq -c | sort -n 831351 80.243.171.172
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 client making the request. Every time your browser connects to a website, it includes the User-Agent field in the HTTP header.
The User-Agent Header is a component of an HTTP request that communicates information about the client software making the request. It tells the server what type of browser, device, operating system, and sometimes rendering engine is being used.
Discover what a user agent is and how it facilitates web interactions. Learn about User-Agent strings and their role in web optimization.
This extension is designed to shield your online privacy and make it super easy to appear as if you're browsing from different devices.
On the Web, a user agent is a software agent responsible for retrieving and facilitating end-user interaction with Web content. This includes all web browsers, such as Google Chrome and Safari, some email clients, standalone download managers like youtube-dl, and other command-line utilities ...
The user agent or agent is the identifier or name with which a program logs in to the web server to request a document. The name is passed through the HTTP header.
A user agent is a data string web browsers transmit when they request content from websites or ad servers. This string includes browser details, such as version, device type, and operating system.
A user agent is a piece of software that acts on behalf of a user, typically a web browser, and identifies itself to web servers when making requests for resources such as web pages or images.
A user agent is a computer program representing a person, for example, a browser in a Web context.
A User-Agent refers to the software used on the client side to access servers based on specific protocols.