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.
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.
Get your users agent string, web browser, opera system, device information and more... Useragent is a small piece of data that is sent by your web browser when accessing a website or application.
3 weeks ago - The user agent is the client in a client–server system. The HTTP User-Agent header is intended to clearly identify the agent to the server.
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 tool can parse HTTP headers (such as the User-Agent and User-Agent Client Hints) to provide information on the associated device, operating system, and browser.
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 determine what content to return.
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 ...
A user agent is a computer program representing a person, for example, a browser in a Web context. Besides a browser, a user agent could be a bot scraping ...
This extension allows you to spoof your browser "user-agent" string to a custom designation, making it impossible for websites to know specific details about ...
There are millions of different types and formats of user agents, we've collected them and organised them by browser type, operating system, platform, software and hardware type. You can explore our huge collection here.
Spoofs & Mimics User-Agent strings.
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.
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. This information helps websites serve content tailored to different browsers and operating systems ...
2 days ago - Hi I’m developing an agent using OpenAI Agents SDK. I want the agent to gather information from the user, e.g. name and identifiication number. new Agent({ name: “Registration Agent”, instructions: `You are an agent that helps users register an account.
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 ...
The user_agent fields normally come from a browser request. They often show up in web service logs coming from the parsed user agent string. User agent field ...
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.
A user agent is a text string sent by browsers or automation scripts in HTTP requests to identify the client's software, browser version, and operating system.
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.
7 Sept 2025 — La raison la plus courante de détecter le User-Agent et de déterminer sur quel type d'appareil fonctionne le navigateur. Le but est de servir un ...
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.
What is a user agent? 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.
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..
User agents are present in HTTP headers when the browser wants to communicate with a server. Each browser has its specific user agent string and web servers ...
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 ...
Accessibility resources free online from the international standards organization: W3C Web Accessibility Initiative (WAI).
Learn how to emulate other browsers with the Network conditions panel.
The User-Agents.Net website provides various user agent lists and technical information about them
Google crawlers discover and scan websites. This overview will help you understand the common Google crawlers including the Googlebot user agent.
User-Agent reduction limits passively shared browser data to reduce the volume of sensitive information which leads to fingerprinting. The reduction is now complete.