How To Improve Angular Application Performance

1. In ngFor loops, use trackBy

To iterate over a set of data and render a template for each item, utilise the ngFor directive. Performance issues could arise, though, if the collection is big.

You can track changes to the collection using the trackBy attribute to enhance performance. By doing this, Angular won't have to render the whole template again for every item in the collection.

2. Make Use of Lazy Loading

Using the lazy loading strategy, you can load only the components that are actually needed at that particular moment. By decreasing the size of the initial bundle that the browser downloads, this can aid in performance improvement.

Each component that is lazily-loaded needs to have its own module in order to use lazy loading. When the component is required, you can utilise the router to load the module.