MutationLens is a free Chrome add-on designed for developers focused on front-end debugging. This tool allows users to select any container within a webpage, initiate a recording, and observe all Document Object Model (DOM) mutations in a clear visual timeline. With its intuitive interface, developers can quickly identify changes and issues, streamlining the debugging process.

The primary feature of MutationLens is its ability to capture and display real-time DOM changes, making it easier for developers to understand how their applications are behaving in response to user interactions or other events. The visual timeline enhances the debugging experience, providing a straightforward way to track modifications and ensure optimal performance of web applications.