

1. Smaller & Faster Apps Angular 4 applications is smaller & faster in comparison with Angular 2.





2. View Engine Size Reduce - Some changes under to hood to what AOT generated code compilation that means in Angular 4, improved the compilation time. These changes reduce around 60% size in most cases.





3. Animation Package - Animations now have their own package i.e. @angular/platform-browser/animations





4. Improvement - Some Improvement on *ngIf and *ngFor.













5. Template - The template is now ng-template. You should use the “ng-template” tag instead of “template”. Now Angular has its own template tag that is called “ng-template”.





6.

NgIf with Else

– Now in Angular 4, possible to use an else syntax as,