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

What Is a User Agent? A Complete Guide for 2026

Introduction A user agent is a text string sent by your browser or script during an HTTP request to identify the client's software and operating environment to the server. It typically includes the browser name, version, operating system, and, occasionally, the device type. Understanding user agents is important in 2026 because they directly influence how websites deliver content, apply bot ...

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