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Guide on Using NextJS Firebase to Make Scalable Apps

If you’re venturing into the world of modern web development, you’ve likely encountered the names Next.js and Firebase. These two technologies, when combined, offer a potent solution for building robust, scalable web applications: NExtJS Firebase!

Understanding the Fusion NextJS And Firebase

Welcome to this comprehensive guide on integrating Next.js with Firebase. In this article, we will explore the seamless integration of Next.js and Firebase, focusing on the key points related to Next.js Firebase. By combining the power of Next.js and Firebase, you can build robust and scalable web applications with ease.

What is NextJS?

Next.js is a React-based framework that simplifies the creation of dynamic and performant web applications. It provides features like server-side rendering, automatic code splitting, and static site generation, making it an excellent choice for building modern web applications.

The Firebase Advantage

Firebase is a comprehensive mobile and web application development platform provided by Google. It offers a range of services such as Realtime Database, Authentication, Cloud Functions, and Hosting. By integrating Firebase with Next.js, you can leverage these services to enhance your web application’s functionality and performance.

Refer to the official documentation at nextjs.com to know more about nextjs and Firebase.

Throughout this article, we will cover various aspects of Next.js and Firebase integration, including setting up Next.js with Firebase, deploying your Next.js app with Firebase Hosting, and leveraging the power of Next.js and Firebase for features like real-time data with Firestore, authentication, and serverless functions.

So let’s dive in and explore the exciting possibilities that “Next.js Firebase” has to offer!

Setting up Next.js with Firebase

To get started with integrating Next.js and Firebase, you need to follow a few steps to set up your development environment.

Let’s go through the process step by step.

1. Prerequisites

  • Before setting up Next.js with Firebase, you need to ensure that you have Node.js and npm (Node Package Manager) installed on your machine.

  • Node.js is a JavaScript runtime that allows you to run JavaScript outside of a web browser, and npm is the default package manager for Node.js.

To check if you have Node.js and npm installed, open your terminal or command prompt and run the following commands:

node --version
npm --version

If you see the version numbers for both Node.js and npm, you’re good to go.

If not, you can download and install the latest version of Node.js from the official website (https://nodejs.org).

2. Creating a Next.js App

  • Once you have Node.js and npm installed, you can create a new Next.js app using the npx create-next-app command.

  • This command sets up a new Next.js project with all the necessary configuration files and dependencies.

Open your terminal or command prompt, navigate to the directory where you want to create your Next.js app, and run the following command:

npx create-next-app my-next-app

This will create a new directory named my-next-app (you can replace my-next-app with your preferred name) with a basic Next.js file structure.

3. Installing and Initializing Firebase

  • To connect Firebase with your Next.js app, you’ll need to install the Firebase CLI (Command Line Interface) globally on your machine.

  • The Firebase CLI allows you to interact with Firebase services from the command line.

Open your terminal or command prompt and run the following command:

npm install -g firebase-tools

Once the Firebase CLI is installed, you can initialize Firebase in your Next.js app by running the following command:

firebase init

This command will guide you through a series of prompts to set up Firebase in your project. Select the Firebase features you want to use, such as Firestore, Authentication, and Hosting.

4. Connecting Firebase to your Next.js App

  • After initializing Firebase js sdk directly, you need to connect it to your Next.js app.

  • To do this, you’ll first need to install the Firebase JS SDK as a dependency in your project.

In your terminal or command prompt, navigate to your Next.js app directory and run the following command:

npm install firebase

This will install the Firebase JS SDK and make it available for use in your Next.js app.

5. Creating A Firebase Project In Firebase Console

Set up a new project from firebase console and and retrieve these values from the Firebase Console.

  1. Create a Firebase Project:

    • Go to the Firebase Console.

    • Click on “Add Project” and follow the setup instructions.

  2. Retrieve Firebase Configuration:

    • Once your project is created, click on the gear icon (settings) next to “Project Overview” in the Firebase Console using the same Firebase account you used for creating the project.

    • Select “Project settings.”

  3. Get Firebase Configuration:

    • In the “General” tab, scroll down to the “Your apps” section.

    • You’ll find a code snippet under “Firebase client js SDK snippet.” Choose the “Config” option.

    • Copy the values for apiKey, authDomain, projectId, storageBucket, messagingSenderId, and appId.

  4. Set Up Environment Variables in Next.js:

    • In your Next.js project, create an env file .env.local in the root directory if it doesn’t exist.

    • Add the following code to set up the environment variable:


    • Replace <your-api-key>, <your-auth-domain>, etc., with the values you copied from the Firebase Console.

  5. Access Environment Variables in Code:

    • In your Firebase configuration file (e.g., firebase.js), access these values using process.env.NEXT_PUBLIC_FIREBASE_API_KEY, etc.

    // firebase.js
    import firebase from 'firebase/app';
    import 'firebase/firestore';
    const firebaseConfig = {
      apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
      authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
      projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
      storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
      messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
      appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
    if (!firebase.apps.length) {
    export { firebase };

By using environment variables, you can securely store sensitive information like API keys without hardcoding them in your codebase. This approach ensures better security and flexibility in managing your project configurations.

With this configuration file in place, you can now start using Firebase services in your Next.js app.

Now we can create an api endpoint for fetching and posting data to Firebase.

In addition, please double-check your server logs for any errors to ensure the Firebase admin app is initializing properly.

With these steps completed, you have successfully set up Next.js with Firebase. Now, let’s move on to deploying your Next.js app with Firebase Hosting.

Follow this video tutorial for a step-by-step guide on integrating next.js with Firebase

Deploying your Next.js App with Firebase Hosting

Once you have built your Next.js app, you can deploy it to Firebase Hosting to make it accessible to the world. Firebase Hosting provides a fast and secure hosting solution for static and dynamic web content.

To deploy your Next.js app to Firebase Hosting, follow these steps:

Step 1. Building the Next.js App

  • Before deploying your app, you need to build it using the command npm run build.

  • This command compiles your Next.js app and generates optimized production-ready code.

  • In your terminal or command prompt, navigate to your Next.js app directory and run the following command:

npm run build

This will create a new directory named build in your project’s root directory, containing the compiled and optimized version of your Next.js app.

Step 2. Deploying to Firebase Hosting

  • To deploy your built Next.js app to Firebase Hosting, you’ll need to use the Firebase CLI.

  • In your terminal or command prompt, navigate to your Next.js app directory and run the following command:

firebase deploy

This command will deploy your app to Firebase Hosting and provide you with a URL where you can access your deployed app.

With your Next.js app successfully deployed to Firebase Hosting, users can now access your app through the provided URL.

Now with everything set are you ready to elevate your web development journey?

Try building your next project with the powerful combination of Next.js and Firebase. Dive into seamless integration, real-time data management, and efficient deployment.

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Comparing Authentication Methods: Firebase vs. Traditional Approaches

Authentication is a critical aspect of web development, ensuring that users can access appropriate resources securely. Let’s compare the authentication methods provided by Firebase with traditional approaches in the table below:

Feature Traditional Authentication Firebase Authentication Ease of Integration Requires setting up server-side authentication logic and managing user sessions manually. Simple integration with Firebase SDK, providing pre-built authentication methods. Social Media Authentication Implementing OAuth providers individually can be complex. Out-of-the-box support for various OAuth providers like Google, Facebook, Twitter, and more. Passwordless Authentication Setting up passwordless authentication may involve additional libraries. Firebase offers built-in support for passwordless authentication methods. Multi-Factor Authentication (MFA) Implementation of MFA may require additional third-party tools. Firebase provides straightforward MFA integration for enhanced security. Real-Time User Management Real-time user updates may require manual handling. Firebase automatically synchronizes user data across devices in real-time. Customization and Extensibility Limited customization options in traditional setups. Firebase offers extensibility through Cloud Functions, allowing custom authentication logic.

Refer to the official documentation at firebase.google.com to explore more about firebase auth

Leveraging the Power of Next.js and Firebase

Now that you have set up Next.js with Firebase and deployed your app using Firebase Hosting, let’s explore how you can leverage the power of Next.js and Firebase to build powerful web applications.

1. Realtime Data with Firestore

Firestore is Firebase’s cloud-hosted NoSQL database that provides real-time data synchronization. With Firestore, you can fetch and update data in real-time, making it an ideal choice for applications that require collaborative and responsive features.

To fetch and display real-time data from Firestore in a Next.js component, follow these steps:

  1. Import the necessary modules and the firebase object from your firebase.js file.

  2. Create a state variable to store the fetched data.

  3. Use the useEffect hook to fetch the data when the component mounts.

  4. Inside the useEffect hook, use the firebase.firestore() method to access Firestore and fetch the data from a specific collection.

  5. Map over the retrieved documents and store them in the state variable.

Here’s an example code snippet that demonstrates fetching and displaying real-time data from Firestore in a Next.js component:

import { useEffect, useState } from 'react';
import { firebase } from '../path-to-firebase';
const RealtimeDataComponent = () => {
  const [data, setData] = useState([]);
  useEffect(() => {
    const fetchData = async () => {
      const snapshot = await firebase.firestore().collection('your-collection').get();
      const newData = snapshot.docs.map(doc => ({ id: doc.id, ...doc.data() }));
  }, []);
  return (
      {data.map(item => (
        <p key={item.id}>{item.name}</p>
export default RealtimeDataComponent;

In this example,

  • The RealtimeDataComponent fetches data from the specified Firestore collection and stores it in the data state variable.

  • The fetched data is then mapped over to render individual paragraphs for each item.

By leveraging Firestore’s real-time data synchronization capabilities, you can create dynamic and collaborative web applications with ease using Next.js and Firebase.

This video tutorial explains cloud firestore in detail


2. Authentication with Firebase

Firebase Authentication provides a secure and easy-to-use authentication system for your web applications. With Firebase Authentication, you can implement user sign-up, sign-in, and access control features with ease.

To implement Firebase Authentication in a protected Next.js component, follow these steps:

  1. Import the necessary modules and the firebase object from your firebase.js file.

  2. Create a state variable to store the authenticated firebase user.

  3. Use the useEffect hook to listen for changes in the user’s authentication state.

  4. Inside the useEffect hook, use the firebase.auth().onAuthStateChanged method to subscribe to authentication state changes.

  5. Update the state variable based on whether the user is an unauthenticated Firebase user or not.

Here’s an example code snippet that demonstrates implementing Firebase Auth in a protected Next.js component:

import { useEffect, useState } from 'react';
import { firebase } from '../path-to-firebase';
const AuthProtectedComponent = () => {
  const [user, setUser] = useState(null);
  useEffect(() => {
    const unsubscribe = firebase.auth().onAuthStateChanged(authUser => {
      if (authUser) {
      } else {
    return () => unsubscribe();
  }, []);
  return (
      {user ? <p>Welcome, {user.displayName} You Are Authorised</p> : <p>Please sign in.</p>}
export default AuthProtectedComponent;

In this example,

  • The AuthProtectedComponent listens for changes in the user’s auth status using the onAuthStateChanged method.

  • If a user is authenticated, their display name is rendered in a welcome message. Otherwise, for an unauthenticated user a message asking them to sign in is displayed.

Follow this video tutorial to know about more such use cases of using next.js and firebase js sdk together https://www.youtube.com/watch?v=awd_oYcmrRA

By implementing Firebase Auth in your Next.js app, you can secure your application and provide personalized experiences for your users.

Empowering Real-Time Collaboration: Next.js with Firebase for Collaborative Editing

In the fast-paced world of collaborative editing, where real-time updates are crucial, the synergy between Next.js and Firebase emerges as a powerful solution.

Let’s explore how combining these technologies can revolutionize collaborative editing experiences.

Seamless Integration with Firebase Realtime Database

Next.js and Firebase together provide a seamless integration with Firebase Realtime Database, a NoSQL cloud database that allows synchronized data updates in real-time. This capability is particularly beneficial for collaborative applications where multiple users need to work on shared documents simultaneously.

Building a Real-Time Collaborative Text Editor

Imagine creating a real-time collaborative text editor using Next.js and Firebase. Users can collaboratively edit a document, and changes are instantly reflected for everyone involved. Below is a simplified example of how you might structure such an application.


  1. TextEditor Component:

    import React, { useState } from 'react';
    import { firebase } from '../path-to-firebase';
    const TextEditor = () => {
      const [content, setContent] = useState('');
      const handleChange = (e) => {
        const newText = e.target.value;
        // Update the Firebase Realtime Database with the new text
      return (
        <textarea value={content} onChange={handleChange} />
    export default TextEditor;

  2. Viewer Component:

    import React, { useState, useEffect } from 'react';
    import { firebase } from '../path-to-firebase';
    const Viewer = () => {
      const [content, setContent] = useState('');
      useEffect(() => {
        // Listen for changes in the Firebase Realtime Database
        const ref = firebase.database().ref('shared-document');
        const listener = ref.on('value', (snapshot) => {
          const newText = snapshot.val() || '';
        return () => {
          // Remove the listener when the component unmounts
          ref.off('value', listener);
      }, []);
      return (
    export default Viewer;

Advantages of Next.js and Firebase Collaboration

  1. Real-Time Updates: Changes made by one user are instantly reflected for all others, creating a smooth and real-time collaborative experience.

  2. Scalability: Firebase scales effortlessly to handle multiple concurrent users, making it suitable for applications with varying levels of user engagement.

  3. Ease of Development: Next.js simplifies the development process, allowing you to focus on the application’s logic rather than managing complex infrastructure.

Incorporate this collaborative editing approach into your Next.js application using Firebase, and witness the transformation of your user experience in real time. Whether you’re building a collaborative document editor or another collaborative tool, the combination of Next.js and Firebase empowers you to create responsive and dynamic applications that keep pace with the demands of today’s collaborative environments.

Conclusion: Unlocking the Future of Web Development with Next.js and Firebase

In conclusion, the seamless integration of Next.js and Firebase has ushered in a new era of web development, offering developers a powerful and efficient toolkit for building dynamic and scalable applications. The combination of Next.js’s robust framework and Firebase’s comprehensive services, including real-time data handling and authentication, provides a winning formula for modern web projects.

Exploring Limitless Possibilities

The ability to effortlessly connect Next.js to Firebase allows developers to explore limitless possibilities, from real-time collaboration features to responsive and performant applications. The integration of Firebase Auth, Firestore, and Hosting streamlines development, enabling a focus on creating exceptional user experiences.

Elevate Your Development Experience

Ready to elevate your development experience? Dive into the world of Next.js with Firebase and unlock a seamless and efficient development process. But don’t stop there – supercharge your workflow by exploring PureCode.ai. Transform design images into code instantly and access a marketplace with over 10,000 AI-generated components. Elevate your designs, streamline your development, and witness the magic of Next.js, Firebase, and PureCode.ai.

Embrace the future of web development. Happy coding!

Yash Poojari

Yash Poojari