How to Improve the Performance of Your React Native App

Aneeqa Khan
4 min readAug 29, 2024
Photo by Austin Chan on Unsplash

React Native is a powerful framework that enables developers to build mobile applications using JavaScript and React. However, like any other framework, optimizing performance is key to delivering a smooth and responsive user experience.

This article will explore various strategies to improve the performance of your React Native app, from code optimization to using native modules.

1. Optimize Image Handling

Images are a crucial part of any mobile application, but they can also be a significant source of performance issues if not handled properly.

  • Use appropriate image formats: Choose the right image format for your needs. For example, use JPEG for photos and PNG for images with transparency. WebP is also a good option as it offers better compression without sacrificing quality.
  • Optimize image sizes: Use tools like ImageOptim or TinyPNG to compress images before including them in your app. This reduces the amount of data your app needs to load.
  • Lazy load images: Only load images when they are about to appear on the screen. Libraries like react-native-fast-image can help with this.
  • Use image caching: Ensure that images are cached properly so that they don’t need to be downloaded…

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Aneeqa Khan

I’m a frontend web and mobile developer specialized in web/mobile designs and frontend frameworks. I usually work with React, React Native, Next and TypeScript.