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 ...
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 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.
8 avr. 2010 · The " User-Agent " header field contains information about the user agent originating the request, which is often used by servers to help identify the scope of reported interoperability …
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.
25 févr. 2013 · The User-Agent appears in an HTTP Request Header, not an HTTP Response one. In general, the request is sent from browser to the web application. So the user-agent variable is filled …
6 nov. 2012 · The user agent string is a text that the browsers themselves send to the webserver to identify themselves, so that websites can send different content based on the browser or based on …
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.
25 avr. 2009 · The user agent doesn't change how Safari renders a page, it just changes what browser Safari pretends to be when making the HTTP request, and when calling navigator.userAgent in …
Jun 25, 2024 · Learn what your user agent is and what it reveals about your web browser, operating system, and mobile device. Find out how to change or fake your user agent and why some sites may detect it.
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.
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.
A user-agent is a string of text, numbers, and symbols that specify the details of a client accessing a server.
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.
A user agent is a string of text that is sent by a web browser to a web server to identify itself and provide information about the browser's capabilities.
Your browser sends its user agent to every website you connect to.
It allows you to choose from a very modest list of preloaded User Agents, as well as add save your own UAs for future use. As with the Chrome extension, changing the User Agent means the whole browsing experience changes. User Agent strings are passed in the HTTP request in which some browser and device specific information is conveyed.
If you are the kind of person that uses different browsers or different devices to access websites, you may have noticed that many sites can look quite different depending on which browser you are using. When your browser sends a request to a website, it identifies itself with the user agent string before it retrieves the content you’ve requested.
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.
Un user agent ou agent utilisateur est une application logicielle cliente qui utilise un protocole réseau particulier ; l'expression est principalement employée ...
The user-agent should be specified as a field in the header. Here is a list of HTTP header fields, and you'd probably be interested in request-specific fields, which includes User-Agent. If you're using …
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 ...
23 avr. 2014 · The User-Agent header is no longer forbidden, as per spec — see forbidden header name list (this was implemented in Firefox 43) — it can now be set in a Fetch Headers object, or with the …
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& User Centric. Nous concevons, designons et développons des produits et des expériences digitales sur-mesure : sites web, applications mobiles, apps dans ...
25 févr. 2016 · User Agent is the browser. Client is the code running on the end user side, which may or may not be running in the browser. Client uses the browser (user agent) to login. The idea here is …
Mar 12, 2026 · Grab the most up-to-date user agents for Chrome, Safari, Firefox, and Edge. These are essential for web scraping, automated screenshots, and bypassing bot blocks.
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.
12 mars 2021 · It’s entirely arbitrary what you put in the user agent field so there is no standard as to what format to use. Saying that, for historical reasons, browsers like to claim to be lots of different …
10 févr. 2020 · 我们可以复制一下这个User-Agent请求头，模仿浏览器的浏览行为，将其粘贴在pycharm的headers的后面，并以字典的形式进行呈现即可完成请求头的代码编写。
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.
12 mai 2017 · I'm trying to set the user-agent in my http header in our override function GetWebRequest in C# protected override System.Net.WebRequest GetWebRequest(Uri uri) { …
The user-agent string was designed as a way for clients (web browsers, for example) to introduce themselves to servers. It enabled servers to deliver content optimized for different browsers or to understand the capabilities of the client requesting the information.
Les navigateurs, lorsqu'ils effectuent des requêtes vers un serveur, y intègrent un en-tête HTTP auto-identifiant User-Agent appelé chaîne de ...
Along with every request to a server, browsers include a User-Agent HTTP header with a value called a user agent (UA) string. This string is intended to identify the browser, its version number, and its host operating system.
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
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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.
A user agent is any software that retrieves and presents Web content for end users or is implemented using Web technologies. User agents include Web browsers, media players, and plug-ins that help in retrieving, rendering and interacting with Web content.