Flutter apps are fast by default, but optimization is necessary as complexity grows. Here’s how to maintain peak performance.

How to optimize Flutter app performance?

1. Use const constructors

Example: Use const constructors

Dart:

const Text('Hello');

2. Avoid rebuilding with unnecessary setState

Use ValueNotifier, Consumer, or fine-grained rebuild control.

3. Use ListView.builder for large lists

Dart:

ListView.builder( itemCount: items.length, itemBuilder: (context, index) => Text(items[index]),
);

4. Profile with DevTools

Bash:

flutter pub global activate devtools
flutter pub global run devtools

5. Image optimization

  • Use cached_network_image
  • Prefer WebP or compressed PNG