The Performance Metrics Tracker is a Chrome extension designed for developers and analysts seeking to monitor and visualize the performance metrics of web pages. It automatically captures key performance indicators (KPIs) of visited URLs, such as start and end times, and presents this data in a detailed waterfall chart, facilitating a more in-depth analysis of web performance.

Key features include the collection of detailed metrics, an interactive waterfall chart for visualizing performance data, and a dynamic table view that allows easy management of metrics. Users can sort, search, and wrap long URLs for improved readability. Additionally, the extension offers export options for downloading performance metrics as a CSV file and the waterfall chart as an SVG file, ensuring that data can be easily shared or analyzed further. The user-friendly interface integrates seamlessly into the browsing experience for quick access to performance information.