On the Web, a user agent is a software agent responsible for retrieving and facilitating end-user interaction with Web content. [1] 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 like cURL.
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.
Ever needed to quickly switch between user-agent strings on the fly? Developing a site that needs to work on both mobile browsers and desktop browsers? Sick of some archaic site blocking you because you're not using Netscape 4? The User-Agent Switcher for Chrome is the answer.
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.
Basically User-Agent is a relic of the past, at least in theory (in browsers that is, in crawlers aka web spiders it can make sense). Browsers should not depend on its value, but some questionably made sites still do sometimes. You nearly never have to change it, that tiny percentage is annoying though. More on reddit.com
Jul 11, 2025 ... 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 is designed to shield your online privacy and make it super easy to appear as if you're browsing from different devices.
User Agents Home Download Browsers Bots Devices Lookup Parser My User Agent Random Contribute Contacts Welcome to User-Agents.Net Hello dear web traveler! I am very pleased for your visit and I hope that you will find here what you were looking for. This site provides various user agent lists and technical information about them.
Learn how to decode and understand any user agent string sent by your web browser or other software. Use this tool to parse user agents by browser, OS, platform, hardware, software type and layout engine.
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.
A user agent is a small piece of text sent by web browsers or automation scripts in HTTP requests to identify the client's software, browser version, and operating system to the web server. What is a user agent header? The user-agent header is the specific HTTP request header that carries the user agent string from the client to the web server.
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.
User-Agent is like a secret code your browser shares with every website you visit. It reveals details about your browser, your operating system, and even some plugins you have installed.
The User Agent Accessibility Guidelines (UAAG) documents explain how to make user agents accessible to people with disabilities. User agents include browsers, browser extensions, media players, readers and other applications that render web content.
A user agent is software used to communicate with the Internet. The user agent software submits requests for Web content on behalf of the user, and receives and displays the content on the user’s device.
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.
Useragents.me provides a self-updating list of user agents seen on the web across all device types, operating systems, and browsers. You can view, download, or get the list as JSON or TSV, and see the relative share of each user agent.
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.
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.
Jan 8, 2024 ... One method to identify what is connecting to a web resource is through a user agent [1] and many are received on DShield [2] honeypots.
UAAG 2.0 guides developers in designing user agents that make the web more accessible to people with disabilities. User agents include browsers, browser extensions, media players, readers and other applications that render web content. A user agent that follows UAAG 2.0 will improve accessibility ...
This document proposes a mechanism which might allow user agents to be a bit more aggressive about removing entropy from the User-Agent string generally by giving servers that really need some specific details about the client the ability to opt-into receiving them.
Displays the browser User-Agent and other useful device info. Data can be shared by email, text, etc. NOTE: Some phones may report a different default User-Agent from within apps (such as this) compared to the browser. Be sure to double-check. Suggestions for improvements and additional features are welcome.
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.
In computing, the User-Agent header is an HTTP header intended to identify the user agent responsible for making a given HTTP request. Whereas the character sequence User-Agent comprises the name of the header itself, the header value that a given user agent uses to identify itself is colloquially known as its user agent string.
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