Learn what the User-Agent header is, how it identifies the browser, operating system, and other details of the requesting user agent, and why browser detection using it is usually a bad idea. See examples of common UA strings for different browsers and devices.
Learn what your web browser is sending in the "User-Agent" header for your HTTP requests and how to change or decode it. Find out more about user agents, browser settings, caches, cookies, updates and VPNs.
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. [2] The user agent is the ...
User agent. 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 webpages, a download manager, or another app accessing the Web. Along with each request they make to the server, browsers include a self-identifying User-Agent HTTP header called ...
Learn how to decode user agent strings from web browsers, devices, software and platforms. Use this tool to parse any user agent string and explore the database of user agents by categories.
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.
See what your user-agent detection library really thinks! Enter a user-agent string: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P)
Google crawlers discover and scan websites. This overview will help you understand the common Google crawlers including the Googlebot user agent.
This tool can parse HTTP headers (such as the User-Agent and User-Agent Client Hints) to provide information on the associated device, operating system, ...
What Is a User Agent? A browser's user agent string (UA) helps identify which browser is being used, what version, and on which operating system. When feature detection APIs are not available, use the UA to customize behavior or content to specific browser versions.
It is a fixed string between two semicolons, in the comment part of the User Agent. These strings are specific for each browser. They indicate the OS, but also often its version and information on the relying hardware (32 or 64 bits, Intel/PPC for Mac, or x86/ARM CPU architecture for Windows PCs).
A user agent is a “string” – that is, a line of text – identifying the browser and operating system to the web server. This sounds simple, but user agents have become a mess over time. The Basics When your browser connects to a website, it includes a User-Agent field in its HTTP header. The contents of the user agent field vary from ...
Learn what a user agent is and how it identifies your browser to web servers. See your user agent string and other headers, and get tips to troubleshoot browser issues.
Learn how to identify the browser, operating system, and software version of a web user agent using the User-Agent request header. See examples of common UA strings for different browsers and devices.