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Angular Performance Optimization Strategies During Angular App Migration

We all are aware that Angular is one of the popular JavaScript frameworks for building web applications, and once the applications grow along with that complexity level, performance optimization becomes crucial as well. Day by day managing an application becomes a task and especially when migrating an existing Angular app or building a new one, it is very important to implement various Angular Performance Optimization strategies to make sure that the app runs smoothly and efficiently.

In this blog, we will explore several Angular performance optimization strategies during app migration in a detailed manner.

Lazy Loading Modules:

Lazy loading includes loading various modules on-demand, rather than loading the entire application at once. It significantly reduces the initial loading time and improves the overall performance. When migrating, identify which modules can be lazily loaded, especially those that are not required for the initial page load.

AOT Compilation:

AOT compilation converts all the Angular templates and components into highly optimized JavaScript during build time. This results in smaller bundle sizes and faster rendering, as there is no need for the runtime compiler. Make sure to enable AOT compilation during the migration process.

Tree Shaking:

Tree shaking is one of the technique used to eliminate unused code from your application. During migration, ensure that your build process is set up to remove dead code and only include the necessary parts of your application. This reduces the bundle size and improves load times.

Code Splitting:

Code splitting involves breaking your application code into smaller chunks that are loaded only when needed. Tools like Angular CLI and Webpack allow you to configure code splitting, which can significantly improve the app's initial load time.

Optimized Images and Assets:

Images and assets can be a significant contributor to slow page loading. During migration Angularjs developer optimize images and assets by compressing them, using modern image formats (e.g., WebP), and loading them lazily to reduce initial load times.


In conclusion, we can say that a guide to Angular Performance Optimization during migration is very much crucial for delivering a fast, responsive, and user-friendly experience. These strategies mentioned above if applied effectively can significantly enhance your application's performance and ensure a seamless transition during the migration process. It regularly reviews and updates your performance optimization techniques to keep your Angular app running at its best.

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