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.
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.
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.
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.
Understand user agents, their role in bot detection, and how to customize them ethically for scraping and automation. Get tips and tools for testing in 2025.
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.
A comprehensive list of User Agent strings for the most popular devices in use today. It includes Android, iPhone, Windows, tablets, desktops, bots and ...
UserAgents.io provides a simple way to parse a user agent and get technical information about it. The database is updated daily and easy to navigate.
Discover what a user agent is and how it facilitates web interactions. Learn about User-Agent strings and their role in web optimization.
Oct 7, 2023 ... 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 ...
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.
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 ...
Beginner's Guide to User-Agent HTTP Headers in Testing Learn what a User-Agent Header is, how it works, and how to test it effectively. Use Requestly to modify and test different User-Agent strings easily.
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.
What is a User-Agent? A User-Agent refers to the software used on the client side to access servers based on specific protocols.