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How to Reduce Unused JavaScript in Your Shopify Store

Alright, online shopkeepers, let’s talk about speed! And not the kind you get from downing a can of energy drink. I’m talking about Shopify store speed optimization. You want your website to be way faster than a cheetah chasing its prey, but unused javascript is holding you back like a ball and chain. So let’s cut the dead weight and reduce the amount of unused javascript which is cluttering up your site. Not only will this boost performance, but it’ll make your customers as happy as a clam. Remember folks, Shopify speed optimization is the name of the game!

Why is Reducing JavaScript Important?

Reducing unnecessary JavaScript will significantly enhance the speed with which your website loads. It is critical for keeping visitors on your site and preventing them from leaving due to slow loading times. Remove any excess JavaScript from your website to improve its performance, which can boost your search engine results and subsequently increase visits to your site.

How to Reduce Unused JavaScript in Your Shopify Store

The first step in reducing unused JavaScript is to identify any unnecessary scripts that are loaded on your website. You can use tools like Google Chrome DevTools or Shopify’s Theme Inspector to find out which scripts are not being used on your website.

Next, remove any unused JavaScript from your website’s code. This can be done manually by editing your website’s theme files. Finally, Monitor your website’s loading speed using tools like Google PageSpeed Insights or Pingdom to ensure that your website is loading quickly and efficiently.

Assessing your Store’s JavaScript Usage

JavaScript is an important component for any Shopify store, but it can also slow down the performance of your website, if not optimized correctly. It’s important to assess your store’s JavaScript usage regularly and remove any unused files to ensure your site runs smoothly.

Use Browser Developer Tools to Identify JavaScript files

One way to identify unused Javascript files is by using browser developer tools. Right-click the page after it has opened in a browser and select “Inspect.” Reload the page after clicking the “Network” tab in the developer tools box. You will see an inventory of all the files, including any Javascript files, that the page loaded.

Analyzing App and Theme JavaScript Files

If you’ve installed any apps or themes that come with Javascript files, it’s essential to analyze them and make sure they’re necessary. You can use browser developer tools to figure out which files are being used.

How to Optimize Your Website by Removing Unused Javascript

Are you also aware that, if your website contains too much Javascript code on your website it can easily slow down your website performance? This will lead to a longer loading time, which can also cause frustration for your visitors and even lead to an increase in the bounce rate of your customer altogether. But don’t worry, you can optimize your website by eliminating unused JavaScript.

Removing JavaScript files Manually

The first way to remove unused JavaScript from your website is to do it manually. This means going through your website’s code and removing any javascript files which aren’t being used. It’s a time-consuming process, but also worthwhile if you want to enhance the overall website performance.

Minimizing and Compressing remaining JavaScript Files

The next step is to minimize and compress the remaining Javascript files once you’ve deleted any unnecessary ones. This entails trimming extraneous code from your JavaScript files and compressing them to make them load quickly. You can also minimize and decompress your javascript files with the support of different tools.

UglifyJS is a popular tool for removing extraneous code and compressing JavaScript files to make them smaller and faster to load. By removing unused JavaScript files, using optimization apps and tools, and minimizing and compressing remaining JavaScript files, you can significantly improve your website’s performance. This can lead to happier visitors, increased engagement, and ultimately, more business for you.

Tips for Minimizing JavaScript Usage in Your Shopify Store

If you are running a Shopify store, you’ll likely be familiar with JavaScript’s importance. We also know how much it is helpful to create a user-friendly, interactive online shopping experience. But having too much JavaScript in your store will definitely affect the performance of your store, leading to frustrated customers and loss in sales. So, let’s find out certain practices we can follow without sacrificing functionality.

Avoiding Unnecessary Apps and Themes

The primary step is to reduce JavaScript usage in order to avoid unnecessary apps and themes. We know that apps and themes are there to help you while adding new features and customizing your store, but the main thing is that it now comes with bloated codes which eventually are going to slow down your website. By looking at every app and theme you’re using, consider whether you actually need the features they offer. If not, it could be worthwhile to locate a less heavy option. 

Reducing Image Sizes to Decrease JavaScript Usage

Reducing the size of your photos is another technique to limit the use of JavaScript. Although large, high-resolution images can be lovely, your site may load more slowly as a result of them. There are multiple methods for resolving this issue. In order to lower the file size of your photographs without sacrificing quality, first make sure that they have been compressed. To make sure that your site is optimal for every user, you can also employ responsive pictures to send various image sizes to various devices.

Keeping Javascript Code Simple and Efficient

When it comes to writing Javascript code for your Shopify store, less is often more. Keep your code simple and efficient, and avoid unnecessary libraries or frameworks that add extra bloat. To make future maintenance and updates simple, make sure your code is well-structured and clear to read. Make sure to thoroughly test the code and make sure everything functions as intended.

Using Lazy Loading for Images and Other Resources

Lazy loading for images and other resources is one of the best techniques to reduce the use of Javascript. The use of lazy loading, which defers the loading of some items until they are necessary, can drastically minimize the amount of Javascript code needed. This is especially helpful for photographs, which frequently occupy an amount of space on a website. Your website will load rapidly even for users with poorer internet connections if you employ lazy loading.


In conclusion, minimizing JavaScript usage in your Shopify store is an essential part of optimizing your site’s performance. Following the best practices such as avoiding unnecessary apps and themes, reducing image sizes, keeping your code simple and efficient, and implementing lazy-loading. This result will make your website speedy, adaptable, and user-friendly. To keep your store operating efficiently, we can build your Shopify store with our Shopify Store Development Services. We will keep your code tested frequently and up to date with the most recent techniques. You can build an excellent online buying experience that encourages repeat business with a little work.