How to Speed Up Your React Native App with Fast Image

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Are you looking for a way to speed up your React Native app? If so, you may want to take a look at react native fast image. This library helps you optimize image loading in your apps. It can help you reduce the number of bytes that are downloaded, which can lead to faster load times. In this article, we will show you how to use react native fast image in your React Native apps.

How can Caching Images Speed up your App?

If you’ve ever used a web browser, you’ve probably noticed that images are often cached by the browser. This means that the next time you visit a website, the images will load faster because they don’t have to be downloaded again. The same principle applies to react-native-fast-image. By caching images, react-native-fast-image can help reduce the number of bytes that need to be downloaded, which can lead to faster load times. React Native doesn’t naturally cache the images so we need the help of react-native-fast-image to make the process a lot easier.

How to Use react-native-fast-image?

If you’re familiar with React Native, then you know that to use a library, you need to install it first. To install react-native-fast-image, simply run the following command:

npm install react-native-fast-image --save
cd ios && pod install

Once react-native-fast-image is installed, you can import it into your project like this:

import FastImage from 'react-native-fast-image'

Now that react-native-fast-image is imported, you can use it in your project just like any other image. For example, if you wanted to display a cached image, you could do it like this:

const App = () => {
  return (
    <FastImage
      style={{ width: 200, height: 200 }}
      source={{
        uri: 'https://unsplash.it/400/400?image=1',
        headers: { Authorization: 'someAuthToken' },
        priority: FastImage.priority.normal,
      }}
      resizeMode={FastImage.resizeMode.contain}
    />
  );
};

This will cache the image so that it can be displayed quickly the next time it’s needed.

Conclusion:

If you’re looking for a way to speed up your React Native app, react-native-fast-image is a great option. By caching images, react native fast image can help reduce the number of bytes that need to be downloaded, which can lead to faster load times. Give react-native-fast-image a try in your next React Native project!

Have you tried react-native-fast-image? What other libraries do you use to speed up your React Native apps? Let us know in the comments!