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

What Is a User Agent? A 2026 Guide for Developers, Scrapers, and Testers

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.

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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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