Angular Service To Dynamically Update Favicon On App

ngx-favicon is an Angular service to dynamically update the favicon on your web app.

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Simple Javascript Library To Change The Favorite Page Icon | favicon.js

How to make use of it:

Install the library in your project:

npm i ngx-favicon

1. Put your favorite icon(s) somewhere in your project and don’t forget to add it to your angular.json file:

{
  ...
  "projects": {
    "[YOUR PROJECT NAME]": {
      ...
      "architect": {
        ...
        "build": {
          ...
          "options": {
            ...
            "assets": [
              "src/favicon.ico",
+             "src/favicon-success.ico",
+             "src/favicon-error.ico",
              "src/assets"
            ],
          }
        }
      }
    }
  }
}

2. Create a new file called favicon.config.ts and enter the following code in it:

// enum all your different favicons
// (for type safety)
export enum CustomFavicon {
  FAVICON_SUCCESS = 'faviconSuccess',
  FAVICON_ERROR = 'faviconError',
}

export type AvailableCustomFavicons = { [key in CustomFavicon]: string };

// -------------------------------------------------------------
// @warning do not forget to add your favicons to your bundle
// you should double check into angular.json file
// -------------------------------------------------------------
// map all the types of favicon to their href
export const customFavicons: AvailableCustomFavicons = {
  // for some reason, impossible to use the syntax
  // [CustomFavicon.FAVICON_SUCCESS]: 'favicon-success.ico',
  // otherwise we end up with an AOT ERROR
  faviconSuccess: 'favicon-success.ico',
  faviconError: 'favicon-error.ico',
};

3. Open the index.html file and add an identifier to the link tag specifying the favicon:

<app-root></app-root>

4. Import the NgxFaviconModule using the forRoot method and select your configuration only once:

+ import { NgxFaviconModule } from 'ngx-favicon';
+ import { customFavicons, AvailableCustomFavicons } from './favicon.config';

@NgModule({
  ...
  imports: [
    ...
+   NgxFaviconModule.forRoot<AvailableCustomFavicons>({
+     faviconElementId: 'favicon',
+     defaultUrl: 'favicon.ico',
+     custom: customFavicons,
+   }),
  ],
  providers: [],
  bootstrap: [AppComponent],
})
export class AppModule {}