Net-Alert is a Chrome extension designed to identify and notify users of duplicate network requests in web applications in real-time. This tool allows developers to automatically detect repeated API calls to the same URL, supporting various HTTP methods such as GET and POST. Users can customize monitoring settings by selecting specific domains and adjusting the time window for detecting duplicate requests, with default settings of 1000ms and a minimum duplicate count of 2.

The extension features a user-friendly notification system that displays alerts in the upper right corner of the screen, where users can customize the notification's position and duration. Additionally, it provides detailed request analysis, including URLs, methods, and timestamps, along with visualizations of duplicate request patterns. Net-Alert is particularly beneficial for frontend developers aiming to debug duplicate API calls and optimize network performance.