Skeleton loaders are grey-shaded shapes that indicate when a part of the screen is loading. Here is an example of skeleton loaders for Facebook:
ngx-skeleton-loader is a small component library that does just that. It gives us access to different skeleton loaders ready to be used in our applications:
What’s nice about that library is that we can customize different aspects of the skeletons, such as animations and colors. You can find some live examples here.
If you want to explore skeleton loaders for your application, feel free to look at my popular tutorial: How to use a skeleton loader with Angular?
The tutorial has several code examples that can be used as-is.