What is a User Agent?

A User Agent (UA) is a string of text your browser sends to a website to identify itself. It typically includes: Browser name (Chrome, Firefox, Safari, etc.) Browser version Operating system (Windows, macOS, Android, etc.) Device type (sometimes) Example of a User Agent string: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 This tells the website: You're on Windows 10 Using Chrome version 121 On a 64-bit system