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.
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.
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 ...
UserAgents.io provides a simple way to parse a user agent and get technical information about it. The database is updated daily and easy to navigate. What ...
Oct 7, 2023 ... It's historically used as a signal to which browser you're using or what bot you are. Some sites (looking at you Google) use it or some other technique to ...
This might be a browser that Google Workspace does not support. https://support.google.com/a/answer/33864 · This site uses cookies from Google to deliver its services and to analyze traffic
We've collected millions of user agents and have categorised a selection of them here for you, based on many of the things we detect about them - Operating System, Browser, Hardware Type, Browser Type, and so on.
A user agent is a computer program representing a person, for example, a browser in a Web context.
Dec 3, 2025 ... The user-agent helps identify the application, operating system, and device type. With this information, websites can deliver optimized content ...
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.
What is a User-Agent? A User-Agent refers to the software used on the client side to access servers based on specific protocols.
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.
NEW LIST: List of User-Agent strings The standard way to pass information to the server about the visiting device is to include it in the User-Agent (UA) string. This information typically passes the name and version of the browser among many other details.
Agents access data continuously. They generate furious spikes in activity and discard their workspace once their work is complete. Their work “habits” strain databases optimized for the infinitely slower, more deliberate interactions of a human user.
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 ...
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 user_agent processor extracts details from the user agent string a browser sends with its web requests. This processor adds this information by default...
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.
Aug 5, 2025 — 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 ...
I see many web development tools that let me change this thing called the user agent. What is it?
The User Agent Accessibility Guidelines (UAAG) documents explain how to make user agents accessible to people with disabilities. User agents include browsers, ...
But we've got collections of the latest user agents grouped by operating system - so by looking for "latest windows user agents" you'll get the latest user agents for all the major browsers that run on Windows.
Go on, put us to the test. Try our User-Agent and User-Agent Client Hints HTTP header parser below and we'll show you what information we can get.
This extension is designed to shield your online privacy and make it super easy to appear as if you're browsing from different devices.
Overriding the user agent string changes how the browser identifies itself to web servers.