const routes = [
  {
    path : 'home',
    component : HomeComponent,
    data : {
      metadata : {
        title : 'Sweet home',
        description : 'Home, home sweet home... and what?',
      }
    }
  },
  {
    path : 'duck',
    component : DuckComponent,
    data : {
      metadata : {
        title : 'Rubber duckie',
        description : 'Have you seen my rubber duckie?',
      }
    }
  },
  {
    path : 'toothpaste',
    component : ToothpasteComponent,
    data : {
      metadata : {
        title : 'Toothpaste',
        override : true, // prevents appending/prepending the application name to the title attribute
        description : 'Eating toothpaste is considered to be too healthy!',
      }
    }
  }
  ...
];

...
import { MetadataModule } from 'ng2-metadata';
...

@NgModule({
  declarations: [
    AppComponent,
    ...
  ],
  imports: [
    ...
    RouterModule.forRoot(routes),
    MetadataModule.forRoot()
  ],
  bootstrap: [AppComponent]
})

...
import { MetadataService } from 'ng2-metadata';
...

@Component({
  ...
})
export class AppComponent {
  ...
  constructor(private metadataService: MetadataService) { }
  ...
}

...
import { MetadataSettings, PageTitlePositioning, MetadataService } from 'ng2-meta';
...

const metadataSettings: MetadataSettings = {
  pageTitlePositioning : PageTitlePositioning.PrependPageTitle,
  pageTitleSeparator : ' - ',
  applicationName : 'Tour of (lazy/busy) heroes',
  defaults : {
    title : 'Mighty mighty mouse',
    description : 'Mighty Mouse is an animated superhero mouse character',
    'og:image' : 'https://upload.wikimedia.org/wikipedia/commons/f/f8/superraton.jpg'
    'og:type' : 'website',
    'og:locale' : 'en-US'
  }
};

...

@NgModule({
  declarations: [
    AppComponent,
    ...
  ],
  imports: [
    ...
    RouterModule.forRoot(routes),
    MetadataModule.forRoot(metadataSettings)
  ],
  bootstrap: [AppComponent]
})

...
import { Component, OnInit } from '@angular/core';
import { MetadataService } from 'ng2-metadata';
...

@Component({
  ...
})
export class ItemComponent implements OnInit {
  ...
  constructor(private metadataService: MetadataService) { }
  ...
  ngOnInit() {
    this.item = //HTTP GET for "item" in the repository
    this.metadataService.setTitle(`Page for ${this.item.name}`);
    this.metadataService.setTag('og:image', this.product.imageUrl);
  }
}