Top Quick Changes that Improve the Performance of a React Native App	
                     Top Quick Changes that Improve the 
RePaecrfto rNmaantciev oef  aApp
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• In the past few years, there were errors found by the app developers on the React 
Native GitHub page.
• According to the Google report, nearly 53% of the visitors close an app or a website 
if the load time is delayed. This indicates that even if your app’s load time delays by 
a single second, you lose a client.
• This article will focus on the tips that would help you enhance the speed of your 
React Native app. In this article, you will get to know the issue faced by most 
developers during a React Native App Development project. Also, you will learn 
about the solutions to the respective problems.
• Even the Best React Native App Development Services, believe that developing 
React Native is not a difficult task anymore. When it comes to React Native App 
Development, it makes use of JavaScript and interacts with all the native elements 
via a bridge.
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Tips to Improve the Performance of React 
Native App:
Here you will come to know about the problems affecting the speed of the app and 
solutions to each of them
1. Issues with Image Size
2. Memory Issues
3. JSON Data Optimization
4. Huge App Sizes
5. Frozen UI Issues
6. Using Maps
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1. Issues with Image Size:
• Images use a lot of memory in the React Native apps. Still, optimizing images is 
necessary for boosting app performance. So, you need to consider this factor 
during the React Native App Development process.
How to resolve the Image Size 
Issue?
• Here are some solutions to resolve problems related to high memory usage that 
occurs due to the images
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 Compressed the size of the images:
• You can optimize the images and it is easy. It is essential to maximize the 
performance of the app. The image size, format, resolution can be optimized to 
boost the app performance.
Here is how you can do it:
• Eliminate the image 
metadata.
• For all SVG image utilize 
GZip compression.
• Decrease the total 
number of images.
• Resize images to allow it fit in the appropriate screen size.
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 Convert images in WebP:
• Using the WebP format in your React Native App Development process is helpful. 
It lets you cut down the load time of a particular image by approximately 28%. 
The React Native Mobile App Development Company New York also utilize 
WebP format to decrease the size of the CodePush bundle by nearly 66%. Also, it 
cuts down the iOS and Android binary size.
 Use PNG Format instead of 
•JPTEryG e:xperimenting with the image 
resolutions as well as formats. This 
helps you increase app 
performance.
 Image Caching:
• Image caching helps save copies of images on your phone’s memory. It helps 
images load faster.
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2. Memory Issues:
• Another issue that is handled by even the top native app development company New 
York is memory leaks. 
• It is one of the major 
issues especially for 
the Android apps that 
are developed to 
React Native. This is 
because of the 
unwanted processes 
running in the 
background.
• You should trace out the memory leaks during your React Native development 
process. It can be identified using Code or Android Studio.
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How to resolve Memory Leaks Issues?
• The most effective method practiced by most react native app development New 
York companies is by utilizing the following scrolling list
 SectionList
 FlatList
 VirtualizedList in place of Listview.
• The scrolling list also aids endless scroll pagination. It is crucial for react native 
app development that has multiple data points. The scrolling list also useful in 
case the app has a refresh option.
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3. JSON Data Optimization:
• Any mobile applications needs to perform loading process for resources from 
distant services and links. Hence, a developer working on a React Native 
development project needs to create fetch requests so that the data can be 
collected via a specific remote server.
• Irrespective of where you want to fetch data from (private/public API), the format 
in which data is obtained will be JSON format. The biggest mistake that most 
developers commit is using the same data received in JSON format. It is not a 
good practice as it reduces app performance. This is because JavaScript makes 
HowJSO tNo s lroew.solve JSON Data issues
• Before rendering make sure you change raw data in JSON format to plain objects.
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4. Huge App Sizes:
• Mostly the top react native app development company New York utilize external 
libraries. When this practice is included within React native app development, it 
directly impacts the size of the application. Now, resource optimization is required for 
cutting down the size of the application.
How to resolve the Huge App Size 
Issues?
• To cut down the size of the application, ProGuard can be used. It helps you build your 
application in different sizes. This will help create the app size ideal for devices with 
different designs. Make sure you also compress the images.
• Also, transfer the components exiting on the native platform to your React Native 
platform. By cutting down the size of the application, you can cut down the burden on 
the bridge, thereby enhancing the speed of the app.
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5. Frozen UI Issues:
• In case a prolonged operation takes place on the primary thread, it results in a frozen 
UI. It obstructs the rendering of UI threading. The issue makes the rendering of huge 
files, map data, custom animations, and raw JSON data even worse.
How to resolve Frozen UI Issues?
• To resolve this issue, the React native app development experts prevent running large 
objects over primary thread. Also, they prevent Object Finalizers.
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Using 
Maps
• In case the app includes the map feature, the features like dragging & navigation 
tend to become slow. How to Resolve Issues Related to Using Maps in the App?
• While working on map feature integration in the app, make sure you eliminate 
the console. This will not let it save any sort of data in XCode. Make sure you 
deactivate the – “auto-update” for the geographical regions.
Read More:
• Top React Native Mobile App Development Company
• React Native vs. Ionic – Which is Best Profitable Choice for Start-up 2020?
• Top 5 Mobile App Development Company
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Conclusi
on
• React Native provides an excellent platform for both app developers and app 
development companies. So, in the React Native App development project, try to 
resolve the issues that reduce the load time of the app. 
• For business owners, faster load time will gain potential customers.
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Thank You
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