How do you optimize Flutter app performance?

Updated Apr 28, 2026

Short answer

By minimizing rebuilds, optimizing list rendering, avoiding opaque layers, and leveraging RepaintBoundaries.

Use const constructors heavily to prevent unnecessary widget instantiation. 2. Push state down the tree so large subtrees don't rebuild. 3. Use ListView.builder for infinite lists. 4. Avoid Opacity and Clip widgets when possible as they force off-screen rendering. 5. Offload heavy computation to Isolates.

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