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.
Un user agent ou agent utilisateur est une application logicielle cliente qui utilise un protocole réseau particulier ; l'expression est principalement ...
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 ...
Un user agent est un identifiant qui permet à un « agent » de s'identifier sur le web et de donner des informations sur lui-même. Ce site donne des informations ...
Cette page vous montre ce que votre navigateur Web envoie dans l'en-tête "User-Agent" pour vos requêtes HTTP. Vous voulez savoir quels en-têtes votre ...
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.
26 janv. 2026 — Un agent utilisateur est un programme informatique qui représente une personne, par exemple, un navigateur dans le cadre d'une utilisation ...
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 ...
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. It typically includes the browser name, version, operating system, and, occasionally, the device type.
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.
The most common directives are “User-agent” (which crawler the rule applies to) and “Disallow” (which paths to avoid).
Agentic means a lot of things these days, and the distinction I've found most useful is autonomous agents versus human-delegated agents. Autonomous agents are the enterprise-deployed bots, workflow automations and service accounts that IT builds and controls. Human-delegated agents are the ones that act on behalf of a specific user, with authority derived from that user's delegation.
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 ...
A User-Agent refers to the software used on the client side to access servers based on specific protocols.
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...
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.
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
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.
Qu'est-ce qu'un User-Agent ? Un agent utilisateur fait référence au logiciel utilisé côté client pour accéder aux serveurs en fonction de protocoles ...
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
26 juin 2025 — A user agent is a small text description of your device that is sent with every web request. Websites can detect the browser you're using and ...
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.
Discover what a user agent is and how it facilitates web interactions. Learn about User-Agent strings and their role in web optimization.
Un user agent, ou agent utilisateur, est un programme qui accède à un contenu web : crawler, navigateur ou encore application.
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.
Beginner's Guide to User-Agent HTTP Headers in Testing Learn what a User-Agent Header is, how it works, and how to test it effectively. Use Requestly to modify and test different User-Agent strings easily.
The User-Agents.Net website provides various user agent lists and technical information about them.
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.
Your user agent is a string that web servers use to identify your browser and optimize content delivery. Learn what a user agent is, how to troubleshoot browser issues, and see your user agent details on this site.
Informations révélées par le User-Agent · Type de navigateur et version : Permet aux sites de savoir si vous utilisez Chrome, Firefox, Safari, ...
What is a User-Agent string? A User-Agent (UA) string is a piece of text that devices send to web servers stating what kind of device and browser are being used. In simple terms, it acts as the messenger (agent) between the device and the web server. Websites use this information to show visitors the correct version of their site. It is a standard part of web architecture and is passed by all ...
This extension is designed to shield your online privacy and make it super easy to appear as if you're browsing from different devices.
A user agent is a computer program representing a person, for example, a browser in a Web context.
Understand what information is contained in a Chrome user agent string. Get an analysis of your or any other user agent string. Find lists of user agent strings from browsers, crawlers, spiders, bots, validators and others..
List of user agents categorized by device and platform. Utility to parse user agents and get information like operative system device
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.
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