How to optimize the loading speed of background images in an Angular application

Utilizing Angular v6, typescript, and SASS for my project. A CSS background image is set for the homepage, however, it's a large photo that always takes too long to load.

Custom CSS:

@import '../../../scss/variables';

:host {
  .wrapper {
    background: linear-gradient(rgba(0,0,0,.5), rgba(0,0,0,.5)), url($hero-background) no-repeat;
    background-size: 100%;

  }
}

Are there any techniques or tricks I can implement to improve the loading time, like preloading the image?

I've made one attempt at this:

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
  encapsulation: ViewEncapsulation.None
})
export class AppComponent {
  public backgroundImg = './assets/backgrounds/hero20.jpg';
}

My initial approach was to preload the image in the main app.component, but it didn't yield the desired results.

Answer №1

Is it feasible to relocate that particular section of the page outside of the Angular app and directly onto the page itself? This approach could potentially improve loading time significantly.

In addition, another recommendation would be to implement a more robust caching mechanism for the image. While this may only impact repeat visits, removing it from the Angular load process or considering compression and optimization through a service like:

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