How do I enable lazy loading for images in Magento?

Enable Lazy Loading for Images in Magento

Method 1: Using a Third-Party Extension

Step 1: Choose and Install a Lazy Load Extension

  1. Find an Extension:
    • Go to the Magento Marketplace and search for "lazy load" extensions.
    • Some popular options include "Mageplaza Lazy Load," "Amasty Lazy Load," and "MageComp Lazy Load."
  2. Purchase and Download the Extension:
    • Select an extension that suits your needs.
    • Purchase and download the extension package.
  3. Install the Extension:
    • Upload the extension files to your Magento root directory using FTP/SFTP.
    • Run the following commands via SSH in the root directory of your Magento installation:
    php bin/magento module:enable [Extension_Name]
    php bin/magento setup:upgrade
    php bin/magento setup:di:compile
    php bin/magento setup:static-content:deploy -f
    php bin/magento cache:clean

Step 2: Configure the Extension

  1. Go to the Admin Panel:
    • Navigate to Stores > Configuration > [Your Extension Provider] > Lazy Load.
  2. Configure Settings:
    • Enable lazy loading and configure the settings according to your preferences.
    • Adjust settings such as image placeholders, loading animations, and any other available options.

Method 2: Custom Implementation Using JavaScript

Step 1: Add Lazysizes Library

  1. Download Lazysizes:
  2. Upload Lazysizes to Magento:
    • Place the lazysizes.min.js file in your theme’s web/js directory.
  3. Include Lazysizes in Your Theme:
    • Add the following code to your theme’s requirejs-config.js file to include the lazysizes library:
    var config = {
        paths: {
            'lazysizes': 'js/lazysizes.min'
        shim: {
            'lazysizes': {
                deps: ['jquery']

Step 2: Modify Image Tags

  1. Update Image Tags:
    • Modify your image tags to use the data-src attribute instead of the src attribute and add the lazyload class. For example:
    <img data-src="path/to/image.jpg" class="lazyload" alt="Your Alt Text" />
  2. Add Placeholder Images:
    • Optionally, add a low-resolution placeholder image in the src attribute to be displayed before the actual image loads:
    <img src="path/to/placeholder.jpg" data-src="path/to/image.jpg" class="lazyload" alt="Your Alt Text" />

Step 3: Initialize Lazysizes

  1. Ensure Lazysizes Initialization:
    • Lazysizes automatically initializes itself, but ensure that your theme includes the necessary initialization code if needed:
    require(['jquery', 'lazysizes'], function ($) {
        $(document).ready(function () {
            // Additional initialization code if necessary