A file with .browser extension is used by ASP.NET web applications to determine the capability and configuration of web browsers. It contains information about the browser’s capabilities, limitations, and characteristics. These characteristics help the ASP.NET framework to recognize the requesting browser and present the webpage to users accordingly.
BROWSER File Format
BROWSER definition files are used by the ASP.NET application to determine the capabilities of the browser. It is information contained in this file that is used by the server to generate markup and other resources that are compatible with the requesting browser.
BROWSER files are saved in plain text file format. You can open a BROWSER file in text editors such as Notepad, Notepad++, Apple TextEdit and Visual Studio IDE.
File Structure of BROWSER File Format