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April 17, 2026 · 1 min read

In React Native, how would you optimize a flat list showing a large number of items for better performance?

I would use the FlatList component and enable the ‘initialNumToRender’ and ‘windowSize’ props to improve performance. Additionally, implementing the ‘keyExtractor’ prop helps React identify which items have changed, are added,…

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📅 Apr 17, 2026 ⏱ 1 min read

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In React Native, how would you optimize a flat list showing a large number of items for better performance?

COVER // IN REACT NATIVE, HOW WOULD YOU OPTIMIZE A FLAT LIST SHOWING A LARGE NUMBER OF ITEMS FOR BETTER PERFORMANCE?

I would use the FlatList component and enable the ‘initialNumToRender’ and ‘windowSize’ props to improve performance. Additionally, implementing the ‘keyExtractor’ prop helps React identify which items have changed, are added, or are removed.

flatlist optimization performance reactnative

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