Creating a Blogger Login Page and Linking it to Firebase (Free Complete Guide)

Info!
This tutorial explains how to create a professional login and registration system in Blogger using Firebase Authentication. The method is completely free and works with Email/Password and Google login.

Table of Contents

Many Blogger users want to create a system that allows visitors to create accounts and log in to the website. Since Blogger does not provide a native user system, developers often use external services such as Firebase.

Firebase, developed by Google, provides powerful tools including authentication, databases, hosting, and cloud functions. In this guide you will learn how to connect a Blogger page with Firebase Authentication step by step.

Default This method works on any Blogger template and does not require paid hosting or advanced backend programming.

Step 1: Create a Firebase Account

The first step is to create a Firebase project which will manage user authentication.

1. Go to the official Firebase platform
2. Sign in with your Google account
3. Click Create Project
4. Enter a project name
5. Disable Google Analytics if you want a simpler setup
6. Click Create

Official website:

https://firebase.google.com

Step 2: Enable Firebase Authentication

Firebase Authentication allows users to log in using multiple providers such as email or Google.

1. Open your Firebase project
2. Go to Build → Authentication
3. Click Get Started
4. Open the Sign-in method tab
5. Enable the following providers:

• Email / Password
• Google Sign-In

After enabling them Firebase will allow users to create accounts and log in securely.

Step 3: Create a Web App Inside Firebase

To connect Blogger with Firebase you must create a Web Application and obtain the configuration code.

1. Open Project Settings
2. Click Add App
3. Select the Web icon
4. Register the application

Firebase will generate a configuration object similar to the following:

Config Key	Description	Example Value
apiKey	Authentication API key	AIzaSyExample
authDomain	Project authentication domain	project.firebaseapp.com
projectId	Unique Firebase project ID	project-id
storageBucket	Storage location	project.appspot.com
messagingSenderId	Messaging identifier	123456789
appId	Application identifier	1:123:web:example

Keep this configuration code because it will be required when connecting Blogger with Firebase.

Step 4: Create the Blogger Login Page

Now open the Blogger dashboard and create a new page.

1. Go to Pages
2. Click New Page
3. Name it Login
4. Switch to HTML mode

You can now insert the login interface and authentication logic.

Complete Login System Code

[HTML]

<div class="firebase-login">

<h2>User Login</h2>

<input id="email" type="email" placeholder="Email address">

<input id="password" type="password" placeholder="Password">

<button onclick="loginUser()">Login</button>

<button onclick="registerUser()">Create Account</button>

<button onclick="loginGoogle()">Login with Google</button>

</div>

[CSS]

.firebase-login{
max-width:400px;
margin:auto;
padding:25px;
background:#ffffff;
border-radius:10px;
box-shadow:0 0 10px rgba(0,0,0,.1);
}

.firebase-login input{
width:100%;
padding:12px;
margin:10px 0;
border:1px solid #ddd;
}

.firebase-login button{
width:100%;
padding:12px;
margin:6px 0;
background:#1976d2;
color:#fff;
border:none;
cursor:pointer;
}

[JS]

const firebaseConfig = {
apiKey: "YOUR_API_KEY",
authDomain: "PROJECT.firebaseapp.com",
databaseURL: "https://PROJECT.firebaseio.com",
projectId: "PROJECT_ID",
storageBucket: "PROJECT.appspot.com",
messagingSenderId: "123456",
appId: "APP_ID"
};

firebase.initializeApp(firebaseConfig);

const auth = firebase.auth();

function registerUser(){

var email=document.getElementById("email").value;
var password=document.getElementById("password").value;

auth.createUserWithEmailAndPassword(email,password)

.then(()=>{
alert("Account created successfully");
})

.catch((error)=>{
alert(error.message);
});

}

function loginUser(){

var email=document.getElementById("email").value;
var password=document.getElementById("password").value;

auth.signInWithEmailAndPassword(email,password)

.then(()=>{
window.location="/";
})

.catch((error)=>{
alert(error.message);
});

}

function loginGoogle(){

var provider = new firebase.auth.GoogleAuthProvider();

auth.signInWithPopup(provider)

.then(()=>{
window.location="/";
});

}

[JSON]

{
"rules":{
".read":true,
".write":"auth != null"
}
}

Step 5: Add Firebase SDK Libraries

Before running the authentication code you must load Firebase libraries inside your Blogger page.

<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-auth.js"></script>

These scripts allow your page to communicate with Firebase services.

Error! If the login or registration fails, check your Firebase API configuration and confirm that Authentication providers are enabled in the Firebase console.

Step 6: Configure Firebase Database Rules

If you plan to store user data you should enable the Firebase Realtime Database.

1. Open Realtime Database
2. Click Create Database
3. Select test mode
4. Apply security rules

The JSON configuration inside the code block earlier allows authenticated users to read and write data securely.

Advantages of Using Firebase with Blogger

• Free authentication system
• Google account login
• Real-time database
• Secure cloud infrastructure
• No backend server required

Professional Tips for Better Security

• Always restrict database rules for authenticated users
• Avoid exposing API keys unnecessarily
• Use HTTPS for all pages
• Implement user session checks

Conclusion

Integrating Firebase with Blogger is one of the most powerful ways to add a modern authentication system to a static website. By using Firebase Authentication you can build login pages, manage users, and store data securely without maintaining a backend server.

With this setup your Blogger website becomes closer to a full web application capable of handling user accounts and interactive features.

Frequently Asked Questions (FAQ)

Is Firebase free for Blogger login systems?

Yes. Firebase provides a free Spark plan that supports authentication, hosting, and database usage for small and medium websites.

Can users log in with Google accounts?

Yes. Firebase Authentication supports Google login. You simply enable Google as a provider in the Firebase console.

Does Blogger support user systems natively?

No. Blogger does not include built-in user registration systems. External services like Firebase are required to implement login features.

Is Firebase secure for website authentication?

Yes. Firebase is developed by Google and includes secure authentication protocols, encryption, and scalable cloud infrastructure.