React Scan

React Scan is a performance monitoring tool for React applications designed to automatically detect re-render issues and potential performance bottlenecks. Unlike React's built-in `Profiler` or other tools like `Why Did You Render?`, `react-scan` aims to provide simple visual cues and requires minimal to no code changes for integration. It offers a portable API accessible via npm, CDN script tags, or a command-line interface, making it versatile for various development workflows across different React frameworks. The package is currently at version 0.5.3 and maintains an active development cycle with a moderate release cadence, though previous versions noted a period of slower releases. Key features include highlighting re-rendering components, providing notifications for performance issues, and offering a persistent, draggable toolbar for inspection.