How to create word add-in with Angular 2+? Word add-ins are one of many developer options you have on the Office add-in platform. In this blog, we can add the add-in using angular. Add-ins are just small web applications that run in one place and are served over HTTPS in the Office client. Building an office add-in in Angular: Step 1: In the package.json file, add the dependencies and dev dependencies and run the npm install command to install these dependencies. { "name": "addin-demo", "version": "0.0.0", "scripts": { "ng": "ng", "start": "ng serve", "build": "ng build", "test": "ng test", "lint": "ng lint", "e2e": "ng e2e" }, "private": true, "dependencies": { "@angular/animations": "~11.0.1", "@angular/common": "~11.0.1", "@angular/compiler": "~11.0.1", "@angular/core": "~11.0.1", "@angular/forms": "~11.0.1", "@angular/platform-browser": "~11.0.1", "@angular/platform-browser-dynamic": "~11.0.1", "@angular/router": "~11.0.1", "rxjs": "~6.6.0", "tslib": "^2.0.0", "zone.js": "~0.10.2", "@microsoft/office-js-helpers": "^1.0.1", "office-ui-fabric-js": "^1.3.0", "@types/office-js": "^1.0.23" }, "devDependencies": { "@angular-devkit/build-angular": "~0.1100.2", "@angular/cli": "~11.0.2", "@angular/compiler-cli": "~11.0.1", "@types/jasmine": "~3.6.0", "@types/node": "^12.11.1", "codelyzer": "^6.0.0", "jasmine-core": "~3.6.0", "jasmine-spec-reporter": "~5.0.0", "karma": "~5.1.0", "karma-chrome-launcher": "~3.1.0", "karma-coverage": "~2.0.3", "karma-jasmine": "~4.0.0", "karma-jasmine-html-reporter": "^1.5.0", "protractor": "~7.0.0", "ts-node": "~8.3.0", "tslint": "~6.1.0", "typescript": "~4.0.2", "@types/office-runtime": "^1.0.7", "html-loader": "^0.5.5", "html-webpack-plugin": "^3.2.0", "office-addin-debugging": "^2.1.13", "office-addin-dev-certs": "^1.0.1", "office-toolbox": "^0.1.1" } } Step 2: Add the office.js library and office UI fabric core CSS in the index.html file. Read More: Ngstyle In Angular For Dynamic Styling Step 3: You should initialize the office in the main.ts file like below and replace the platformBrowserDynamic () function. Your main.ts file look like this: import { enableProdMode } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { AppModule } from './app/app.module'; import { environment } from './environments/environment'; if (environment.production) { enableProdMode(); } Office.initialize = reason => { console.log('office is initialized'); platformBrowserDynamic() .bootstrapModule(AppModule) .catch(error => console.error(error)); }; Step 4: After that, you should make sure that your target is to set the es5 and data typeRoots in the tsconfig.json file. { "compileOnSave": false, "compilerOptions": { "baseUrl": "./", "outDir": "./dist/out-tsc", "forceConsistentCasingInFileNames": true, "strict": true, "noImplicitReturns": true, "noFallthroughCasesInSwitch": true, "sourceMap": true, "declaration": false, "downlevelIteration": true, "experimentalDecorators": true, "moduleResolution": "node", "importHelpers": true, "module": "es2020", "target": "es5", "typeRoots": ["node_modules/@types"], "lib": [ "es2018", "dom" ] }, "angularCompilerOptions": { "strictInjectionParameters": true, "strictInputAccessModifiers": true, "strictTemplates": true } } Step 5: Create the Manifest.xml file. To create the manifest.xml file, one of the simple ways is using Microsoft office Add-in Project Generator. After installation, use the following command to start the generator. After running this command, selecting the Office Add-in project containing the manifest only option. Write the name of the add-in. Select the word option. After that, it automatically creates the manifest.xml file. 723d118f-7c3b-44fa-ac05-be9cb09b5a92 1.0.0.0 [Provider name] en-US AppDomain1 AppDomain2 AppDomain3 ReadWriteDocument ButtonId1 Looking for Best Word Add-in Development Solutions? Your Search ends here. See here Step 6: Add the following code in the polyfills.ts file to enable the polyfills for IE. import 'core-js/client/shim'; import 'core-js/es6/symbol'; import 'core-js/es6/object'; import 'core-js/es6/function'; import 'core-js/es6/parse-int'; import 'core-js/es6/parse-float'; import 'core-js/es6/number'; import 'core-js/es6/math'; import 'core-js/es6/string'; import 'core-js/es6/date'; import 'core-js/es6/array'; import 'core-js/es6/regexp'; import 'core-js/es6/map'; import 'core-js/es6/weak-map'; import 'core-js/es6/set'; Conclusion In this blog, we have explained how to build office add-in in angular. Add-ins are just small web applications that run in one place and are served over HTTPS in the Office client.