Learn about User Agents

How to detect Windows 11 from the User Agent string

Lots of people have been asking us how to detect Windows 11 using the User Agent string; here's all the information you need to know about detecting Windows 11.

User Agent best practices for browser developers

Are you developing a web browser or a bot? Here's a detailed list of "Do's" and "Don'ts" for sending your user agent string. It's a niche topic; but there are definitely things you should and shouldn't include in your browser or bot's user agent string. Following this guide will help you avoid a lot of problems.

Unknown User Agent fragments

There's a few User Agent fragments that no one on the internet can figure out; maybe you can uncover what they mean...