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User-Agent header

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. The user agent for the operator of a computer used to access the Web has encoded within the rules that govern its behavior the knowledge of how to negotiate its half of a request-response transaction; the user agent thus plays the role of the client in a client–server system. Often considered useful in networks is the ability to identify and distinguish the software facilitating a network session. For this reason, the User-Agent HTTP header exists to identify the client software to the responding server.

Wikipedia

brave	Suspended: too many requests
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https://whatmyuseragent.com

What's My 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.

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https://www.whatismybrowser.com › detect › what-is-my-user-agent

What is my User Agent? - WhatIsMyBrowser.com

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.

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https://es.wikipedia.org › wiki › Agente_de_usuario

Agente de usuario - Wikipedia, la enciclopedia libre

Un agente de usuario es una aplicación informática que funciona como cliente en un protocolo de red; el nombre se aplica generalmente para referirse a ...

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https://developer.mozilla.org › en-US › docs › Web › HTTP › Reference › Headers › User-Agent

User-Agent header - HTTP | MDN - MDN Web Docs

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.

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https://gologin.com › blog › what-is-a-user-agent

What is a User Agent? Complete Guide 2026 & Browser Checker

What is a user agent string, and how do websites use it to track you? Learn how to inspect and safely change your browser user agent with Gologin.

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https://chromewebstore.google.com › detail › user-agent-switcher-and-m › bhchdcejhohfmigjafbampogmaanbfkg

User-Agent Switcher and Manager - Chrome Web Store

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.

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https://useragents.io

List of User Agents strings | UserAgents.io

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.

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https://explore.whatismybrowser.com › useragents › parse

Parse a user agent - WhatIsMyBrowser.com

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.

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https://en.wikipedia.org › wiki › User_agent

User agent - Wikipedia

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.

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https://developer.mozilla.org › es › docs › Web › HTTP › Reference › Headers › User-Agent

User-Agent - HTTP - MDN Web Docs - Mozilla

9 abr 2026 ... User-Agent ... El User-Agent request header es una cadena característica que le permite a los servidores y servicios de red identificar la ...

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https://chromewebstore.google.com › detail › user-agent-switcher-for-c › djflhoibgkdhkhhcedjiklpkjnoahfmg

User-Agent Switcher for Chrome - Chrome Web Store

Spoofs & Mimics User-Agent strings. Spoofs & Mimics User-Agent strings. 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. With this extension, you can quickly and ...

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https://www.browserless.io › blog › what-is-a-user-agent

What Is a User Agent? A Complete Guide for 2026 - Browserless

10 ene 2026 ... A user agent is a small piece of text that your web browser or script sends during an HTTP request to identify the client's software and ...

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https://www.whatismybrowser.com › es › detect › what-is-my-user-agent

¿Cuál es mi agente de usuario? - WhatIsMyBrowser.com

Every request your web browser makes includes your User Agent; find out what your browser is sending and what this identifies your system as.

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https://www.seobility.net › es › wiki › User_Agent

¿Qué es un User Agent? - Seobility Wiki

Un user agent o agente de usuario, también conocido como UA por sus siglas en inglés, es un software que se comunica con los servidores de una red. Básicamente, ...

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https://play.google.com › store › apps › details

User Agent - Apps en Google Play

Acerca de esta app. arrow_forward. Muestra el navegador del Usuario-Agente y otra información útil del dispositivo. Los datos pueden ser compartidos por correo ...

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https://dinorank.com › blog › user-agent

Qué es el User-Agent - DinoRANK

Cómo modificar el User-Agent. Puedes cambiar el User-Agent para comprobar cómo se ve tu página web en distintos navegadores y dispositivos. Esto te puede ...

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https://www.indexandomarketing.com › que-es-un-user-agent

¿Qué es un User Agent? - Indexando Marketing

Qué es un User Agent. Un User Agent es el representante de un usuario que hace de mediador entre el cliente/usuario y el servidor. De esta manera, las páginas ...

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https://www.youtube.com › watch

4.7 User-Agent Switcher: Change your identity on the Internet

27 feb 2025 ... Las webs saben qué navegador, sistema y dispositivo usas. Con User-Agent Switcher puedes mentirles. Y a veces es muy útil.

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https://www.w3.org › TR › web-user-agents

Web User Agents - W3C

24 jul 2026 ... A user agent must mediate between the Web and its user, explaining what is happening in a form the user can understand. When the user agent ...

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https://soycarlosgonzalez.com › user-agent

User Agent ¿Qué es? | Wiki SEO - Carlos González

Un User Agent es una cadena de texto que identifica el software (como un navegador web o un bot de motor de búsqueda) que está interactuando con un servidor web ...

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https://www.betterbugs.io › development-tools › what-is-my-user-agent

What is My User Agent - Developer Utility Tools - BetterBugs

The What is My User Agent tool is an absolutely free-to-use dev utility on BetterBugs.io. This tool instantly reads the User-Agent header your browser is ...

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https://user-agents.net

User Agents

Latest User Agents: · Mozilla/5.0 (Android 14; Mobile; rv:141.0) Gecko/22780360 Firefox/141.0 · TuneIn Radio/42.2.0; iPhone14,7; iOS/27.0 · Java-http-client/ ...

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https://www.browserscan.net › es › user-agent

Analizar la cadena de User Agent - BrowserScan

User-Agent. Amazon CloudFront. Robot de rastreo. Sí. Pruebe el siguiente agente de usuario. Analizar el agente de usuario del navegador actual; GoogleBot User- ...

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https://developers.google.com › search › blog › 2011 › 03 › mo-better-to-also-detect-mobile-user

Para móviles, es mejor detectar el user-agent "mobile"

Veamos unos ejemplos. ... puesto que no contiene la cadena "mobile", le servimos la versión para escritorio (o una versión personalizada para dispositivos Android ...

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https://internetrepublica.com › blog › user-agent

¿Qué es el user agent? - Internet República

28 nov 2024 ... El user agent es una cadena de texto que los navegadores web, aplicaciones y dispositivos envían a los servidores al realizar una solicitud.

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https://www.youtube.com › watch

How to change the User Agent from Chrome - YouTube

1 abr 2019 ... El User Agent es un parámetro que indica a un servidor desde qué navegador o dispositivo estamos accediendo. Se usa para proporcionar o ...

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https://thunderbit.com › es › blog › user-agent-switcher-and-manager

Entender User Agent Switcher & Manager para navegar - Thunderbit

21 may 2026 ... Un user agent switcher and manager es una extensión o herramienta del navegador que te permite cambiar o “falsear” esta cadena. Dicho de otro ...

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