What is the use of serve favicon from Node.js Server ?

Last Updated : 20 Jun, 2024

A favicon is a small icon displayed in a browser's tab, next to the page title, bookmarks, and address bar. Despite its size, a favicon plays a significant role in branding and enhancing user experience by making web applications easily recognizable and improving their visual appeal. Serving a favicon from a Node.js server is essential for modern web development. In this article, we'll explore what a favicon is, its importance, and how to serve it using a Node.js server.

What is a Favicon?

A favicon, short for "favourite icon," is a small graphic, usually 16x16 or 32x32 pixels in size, associated with a website or web page. It appears in the following locations:

  • Browser tabs
  • Bookmarks bar
  • Address bar
  • Browser history
  • Operating system shortcuts

Favicons are typically in .ico, .png, .svg, or .gif format and provide a visual cue to users, helping them quickly identify the website.

Importance of a Favicon

  • Brand Recognition: A favicon serves as a visual representation of a website's brand, making it instantly recognizable to users. This is especially important for websites that users frequently visit, as the favicon becomes a familiar symbol associated with the site's identity.
  • User Experience: Favicons improve the user experience by allowing users to easily identify and switch between open tabs in their browser. This is particularly useful when multiple tabs are open, helping users quickly locate the desired tab.
  • Professionalism: Including a favicon on your website demonstrates attention to detail and professionalism. It shows that you care about the user experience and have taken the time to include a small but important feature.
  • Bookmarking: When users bookmark a website, the favicon appears next to the bookmark, making it easier to identify the site later. This can encourage users to return to the site more frequently.
  • SEO Benefits: While favicons do not directly impact search engine rankings, they can contribute to a better user experience, which can indirectly affect metrics like bounce rate and time on site. These user behavior metrics can influence search engine optimization (SEO).

Installation Steps

Step 1: Make a folder structure for the project.

mkdir myapp

Step 2: Navigate to project directory

cd myapp

Step 3: Initialize the NodeJs project inside the myapp folder.

npm init -y

Step 4: Install the necessary packages/libraries in your project using the following commands.

npm install express serve-favicon

Project Structure:

Project directory

The updated dependencies in package.json file will look like:

"dependencies": {
    "express": "^4.19.2",
    "prompt": "^1.3.0",
    "serve-favicon": "^2.5.0"
  }

Example: Implementation to show the use of serve favicon from Node.js server.

HTML 
<!-- index.html -->

<!DOCTYPE html>
<html>

<head>
    <title>GeeksForGeeks</title>
</head>

<body>
    <h1 style="color: green;">
        GeeksForGeeks
    </h1>
</body>

</html>
Node 
// server.js

// Import modules
const favicon = require('serve-favicon');
const express = require('express')
const app = express()

// Returns a middleware to serve favicon
app.use(favicon(__dirname + '/favicon.ico'));

// API endpoint to serve index 
app.get('/', (_, res)=> res.sendFile(__dirname + '/index.html'))

// Start the server
app.listen(8080);

Step to run the application: Run the server.js using the following command

node server.js

Output: Open the browser and go to http://localhost:8080/, we will see the following output on screen.

Note: Remember, serve-favicon is only serving default, implicit favicon, which is GET /favicon.ico. Use serve-static for vendor-specific icons that require HTML markup. 

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