How to Create a QR Code Generator in Angular

In this tutorial, we'll demonstrate how to generate QR codes in Angular 14 applications using the angularx-qrcode library. You'll learn the key concepts of QR code generation, including the use of QR code options and error correction levels. We'll walk you through how to incorporate the angularx-qrcode library into your Angular 14 app, configure QR code generation settings, and display the generated QR codes on the front-end. By the end of the tutorial, you'll be able to create custom QR codes in your Angular 14 application using the angularx-qrcode library.

Use the following steps to generate qr code in Angular 14 apps:

Table of contents

• Step 1: Create New Angular App
• Step 2: Install Angularx-qrcode npm Package
• Step 3: Add Modules in Module.ts File
• Step 4: Create QR Code on View File
• Step 5: Add Code On Component ts File
• Step 6: Start Angular App 
   

Step 1: Create New Angular App

First of all, open your terminal and execute the following command on it to install Angular app:

ng new my-new-app

Then execute the following command on terminal to install Angular material:

ng add @angular/material

Step 2: Install angularx-qrcode npm Package

In this step, you need to install angularx-qrcode in our angular application. So, open your terminal and execute the following command:

npm install angularx-qrcode --save

Step 3: Add Modules in Module.ts File

In this step, visit src/app directory and open app.module.ts file. Then add the following code into it:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
   
import { AppComponent } from './app.component';
import { QRCodeModule } from 'angularx-qrcode';
   
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    QRCodeModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Step 4: Create QR Code on View File

In this step, create html and for display qr code in Angular apps. So, visit src/app/app.component.html and update the following code into it:

<h1>How to Generate QR Code in Angular 14?</h1>
    
<qrcode [qrdata]="'myAngularxQrCode'" [width]="256" [errorCorrectionLevel]="'M'"></qrcode>

Step 5: Add Code On Component ts File

In this step, visit the src/app directory and open app.component.ts. Then add the following code into component.ts file:

import { Component } from '@angular/core';
   
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  public myAngularxQrCode: string = null;
   
  constructor () {
    this.myAngularxQrCode = 'tutsmake.com';
  }
}

Step 6: Start Angular App

In this step, execute the following commands on terminal to start Angular app:

ng serve

The guide ends here. now you can generate custom QR code in your Angular 14 app using angularx-qrcode library.

Happy Coding !!!

#angular