How To Optimize Angular App

Angular is a powerful platform for building web applications. However, as your app grows in complexity, it’s important to optimize its performance to ensure a seamless user experience. In this tutorial, we’ll explore some tips and best practices for optimizing your Angular app.

1. Minimize HTTP Requests

Reducing the number of HTTP requests can have a significant impact on your app’s performance. Make sure to bundle and minimize your JavaScript and CSS files, and consider using HTTP/2 to take advantage of multiplexing and server push.

2. Enable AOT Compilation

Ahead-of-Time (AOT) compilation can improve the startup performance of your app by pre-compiling templates and generating optimized JavaScript code. You can enable AOT compilation by adding the –aot flag to the ng build command.

3. Lazy Load Modules

Lazy loading modules can improve the initial load time of your app by only loading the modules that are required for the current route. This can be achieved using the loadChildren property in your routing configuration.

4. Use OnPush Change Detection

By default, Angular uses the default change detection strategy, which can be computationally expensive for large apps. Switching to the OnPush change detection strategy can optimize change detection and improve performance.

5. Optimize Bundle Size

Consider using tools such as Webpack Bundle Analyzer to identify and eliminate unnecessary dependencies and reduce the size of your app’s bundles. Smaller bundle sizes can lead to faster load times and improved performance.

Conclusion

Optimizing an Angular app is an ongoing process that requires careful consideration of various factors such as HTTP requests, compilation, module loading, change detection, and bundle size. By following the tips and best practices outlined in this tutorial, you can ensure that your Angular app delivers a fast and responsive user experience.