The Global Variable Detector Extension is a tool designed for Chrome users to analyze the quality of their JavaScript code by focusing on the number of global variables present on a webpage. This free extension provides an intuitive way to enhance code quality by identifying potential issues related to global scope.

Users can easily access the extension by clicking on the Browser Action button, represented by a blue icon with "Gl." Once activated, it collects and displays a list of global variables in the Console, along with an object that logs these variables in an array format. This functionality aids developers in maintaining cleaner and more efficient code.