Overview
The performance overlay package for Flutter provides real-time performance metrics such as frame rate, memory usage, and CPU load directly on the app interface. Designed to work seamlessly across all platforms—including web—it helps developers identify and resolve performance bottlenecks during development. The overlay is lightweight and configurable, making it ideal for debugging UI responsiveness and resource consumption. It integrates easily via a simple pub add command and supports multiple target platforms.
Use cases
- Real-time performance monitoring during development
- Identifying frame drops and rendering issues
- Optimizing app responsiveness on web
- Debugging memory and CPU usage
- Testing app performance across different devices
- Validating UI smoothness in production-like environments
Key features
- Live frame rate and performance stats
- Cross-platform support including web
- Minimal setup with pub add
- Configurable overlay appearance
- No runtime overhead in release mode
- Supports all major Flutter platforms
Suitable for
- Flutter developers troubleshooting UI lag
- Teams building web-first Flutter apps
- Performance-focused app optimization
- Frontend engineers testing responsiveness
- Mobile and desktop app developers
- QA testers validating app stability
Considerations
- Overlay should be disabled in production builds
- May impact performance slightly during heavy use
- Not intended for end-user visibility
- Requires manual integration in app entry point
- Limited customization options for layout
- Best used during active development sessions