How to get meta data of files in firebase storage using ReactJS ?
Last Updated :
26 Jul, 2024
Within the domain of web development, effective file management is a frequent necessity, and Firebase Storage emerges as a resilient solution. This article explores the nuances of extracting metadata from files housed in Firebase Storage through the lens of ReactJS.
Prerequisites
Steps to create React Application And Installing Module
Step 1: Create a React application using the following command:
npx create-react-app myapp
Step 2: After creating your project folder i.e. myapp, move to it using the following command:
cd myapp
Step 3: After creating the ReactJS application, Install the firebase module using the following command:
npm install [email protected] --save
Step 4: Go to your firebase dashboard and create a new project and copy your credentials.
const firebaseConfig = {
apiKey: "your api key",
authDomain: "your credentials",
projectId: "your credentials",
storageBucket: "your credentials",
messagingSenderId: "your credentials",
appId: "your credentials"
};
Step 5: Initialize the Firebase into your project by creating firebase.js file with the following code.
import firebase from 'firebase';
const firebaseConfig = {
// Your Credentials
};
firebase.initializeApp(firebaseConfig);
var storage = firebase.storage();
export default storage;
Project Structure:

The updated dependencies in package.json file will look like:
"dependencies": {
"firebase": "^8.3.1",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"react-scripts": "5.0.1",
"web-vitals": "^2.1.4",
}
Example: Here, We are going to use a method called getMetadata which helps us to get the meta data of files in firebase storage.
JavaScript
import { useState } from 'react';
import storage from './firebase';
function App() {
const [image, setImage] = useState('');
const [show, setShow] = useState(false);
const [value, setValue] = useState('');
const upload = () => {
if (image == null)
return;
// Sending File to Firebase Storage
storage.ref(`/images/${image.name}`).put(image)
.on("state_changed", alert("success"), alert, () => {
// Getting Meta Data Of File
storage.ref("images")
.child(image.name)
.getMetadata()
.then((data) => {
setValue(data);
setShow(true);
})
});
}
return (
<div className="App"
style={{ marginTop: 250 }}>
<center>
<input type="file"
onChange={
(e) => { setImage(e.target.files[0]) }} />
<button
onClick={upload}>
Upload
</button>
<br /><br /><br /><br />
{
show ?
<div>
<h2>Name :
{value.name}
</h2>
<h2>Size :
{value.size}
</h2>
<h2>Path :
{value.fullpath}
</h2>
<h2>Time :
{value.timeCreated}
</h2>
</div>
:
<div></div>
}
</center>
</div>
);
}
export default App;
Step to Run Application: Run the application using the following command from the root directory of the project:
npm start
Output: Now open your browser and go to http://localhost:3000
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