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Magento 2 Defer JavaScript

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Defer JavaScript is an additional plugins for Magento 2 to delay the loading of unnecessary JavaScript until it is needed by moving all JS code to the bottom of the page, which effectively can reduce the initial load time of your page.

Magento 2 Defer Javascript extension helps improve your Magento 2 store performance and customer shopping experience.

  • Defer parsing of Javascript to improve the rendering speed of sites
  • Effectively defer Iframes embedded on websites
  • Exclude homepage from deferring Javascript impact
  • Allow listing controllers and paths to be unaffected by deferring Javascript
  • Raise your ranking on SERPs
Book a Demo Live »
|
ComposerPacks
Open Source (CE): 2.3.x - 2.4.x
|
Commerce On-Premise (EE): 2.3.x - 2.4.x
Frontend Demo Luma Backend Demo Luma Installation Guide User Guide

Defer JavaScript is an additional plugins for Magento 2 to delay the loading of unnecessary JavaScript until it is needed by moving all JS code to the bottom of the page, which effectively can reduce the initial load time of your page.

Magento 2 Defer Javascript extension helps improve your Magento 2 store performance and customer shopping experience.

  • Defer parsing of Javascript to improve the rendering speed of sites
  • Effectively defer Iframes embedded on websites
  • Exclude homepage from deferring Javascript impact
  • Allow listing controllers and paths to be unaffected by deferring Javascript
  • Raise your ranking on SERPs
Book a Demo Live »
|
ComposerPacks
Open Source (CE): 2.3.x - 2.4.x
|
Commerce On-Premise (EE): 2.3.x - 2.4.x
Frontend Demo Luma Backend Demo Luma
Installation Guide User Guide
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$79.00

 

Free
1-Year Support

 

Free
Lifetime Update

 

Free
Installation

 

(*) 30-Day
Money Back

$79.00

Magento 2 Defer Parsing Of Javascript To Enhance The Rendering Site Speed

Let's take a look at the following results generated by GTmetrix.com to see the differences:

After installing Defer JavaScript-magento 2 jssAfter installing Defer JavaScript
Before installing Defer JavaScript-magento 2 jsBefore installing Defer JavaScript

We can depend on results generated by Gtmetrix or Google PageSpeed Insight to measure how well the site is performing.

As you can see, deferring JavaScript has a big impact on the time a website renders. By moving all Magento 2 JavaScript to the end of the page to be loaded later, the loading time can be reduced.

Key Benefits of Magento 2 Defer Javascript Bundling Extension

Effectively defer Iframes embedded on websites

When these iframes are embedded on your site, the browser simultaneously loads Magento JS files of these pages, which can slow down your webpage.

Hence, using this defer js extension, there is no need to worry about the impact of external Iframes processing on your site performance anymore.

Raise your ranking on SERPs

Google indicated that site speed is used in ranking a website on both desktop and mobile searches.

Optimizing the page speed by deferring Magento 2 defer JavaScript gives your website a better chance to be in a higher rank than other competitors with poorer performance.

Consider our comprehensive suite of Magento SEO modules to take control of your SEO, drive more organic traffic, and improve rankings today.

Exclude homepage from deferring JavaScript impact

It is easy for you to enable or disable the impact of Magento Javascript deferring on the homepage in the module configuration.

Allow listing controllers and paths to be unaffected by deferring JavaScript

If you desire to exclude specific controllers and paths from being impacted by this feature, you can list them in the configuration based on the provided format. Besides, Magento 2 defer parsing of javascript extension also supports displaying these controllers and paths in a table at the end of the page.

How Can Magento 2 Require JS Improve Website Performance?

The browser often loads codes from the top to the bottom of the page, it has to load the content of all <script> tags, which adds additional time to load the web page.

Thus, deferring parsing of Javascript helps to delay Magento Javascript loading until the last moment when the browser finishes HTML and CSS loading.

This makes necessary contents receive loading priority over Magento 2 defer JavaScript code that doesn't need to be executed immediately. As a result, visitors don’t have to wait so long for content to appear, which improves customer shopping experience effectively.

Along with Full Page Cache, Magento 2 minify JS extension is an effective tool for speed optimization.

Faster loading speed for better shopping experience. Install Magento 2 Defer JavaScript NOW!

Why BSS Magento 2 Defer JavaScript

Competitive Price

Every merchant needs to survive – we do understand. That’s why we keep the price as low as possible.

Dedicated Support

We are all ears to your problems, either with our extensions or customizations. FREE 1-year support is included.

Open Source

The source code is completely open to inspect, modify and enhance according to your business purposes.

Verified by Marketplace

No worries about the code. This extension has passed the strict Extension Quality Program & been listed on Marketplace.

High Compability

Our modules work well with each other. Even you want ours to be compatible with those of others. We are here to help

Simple installation

We simplify and clarify the installation process, so you can get the extension played for your website in clicks.

Quick Update

Your business and customers’ demands are ever-changing. Our extensions are also up-to-date with new features.

Business expert

Our certified experts get involved from the extension development to support to bring you efficient and budget solutions.

Easy to Use

No need to install bunches of redundant features. We select the most relevant functions to ensure the user-friendliness.

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FAQs

  • How can I check the result of Defer JavaScript in Gtmetrix?
    Just go to Gtmetrix.com, enter your website URL in the box and then you start processing. You had better test your site before and after using this module to see the differences in Defer score. If the Defer score of the site is higher, it means that Javascript files are being deferred effectively or on another hand, your site is performing better and better.
  • I see you have both Infinite Scroll and Lazy Image Loader extensions for Magento 2, so could these 2 modules work well with Defer JavaScript?
    Thanks for your interest! Both Infinite Scroll and Lazy Load extensions work very well with Defer javaScript without any conflicts. Hence, you can totally install them on your website.
  • Is your module still effective when browsing on Mobile?
    Thanks for your interest! When you browse your site on Mobile, this extension still works well to help you defer JavaScript loading till the last moment to improve site performance.

  • Can I install this Magento 2 extension via Composer? If yes, how can I do that?

    Yes. You can install Magento 2 extensions via Composer following the instruction here.

  • How to send customization request for this extension?

    Dear,

    Just drop us an email to sales@bsscommerce.com or contact us.

    We'd like to offer customization service for all BSS Commerce extensions and any third-party extensions.

Icon QuestionAsk a Question
Release Note
  • V2.0.7 (Jun 03, 2021): Remove required PHP
  • v2.0.5 (Jul 26, 2019): Fix missing summary on Bundle product page
  • v2.0.4 (Apr 23, 2019): Compatible with Magento 2.3.1
  • v2.0.3 (Mar 07, 2018): Fix unserialize issue on magento 2.2
  • v2.0.2 (Apr 07, 2017): Defer Iframe
  • v1.0.0: First Release
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