![]() ![]() You can get more detailed reports on the factors causing the “reduce unused JavaScript” message to pop up by using online testing tools to check your websites. Failing to remove such testing code can result in JS files piling up on your web page. Also, code for testing website performance may have JS files. Such occurrences of redundant code increase rendering time, and you should remove them immediately. Usually, you get “dead JS” if you have pieces of old code from previous web page versions that are no longer functional. You can have utterly redundant code that has no use in the entire website. However, it’s not always about wrong placement. But such plugins also use JS and cause slow rendering. Similarly, you will likely add plugins to improve user experience. It just comes in the way as the browser parses your page’s HTML. Although it is necessary for efficient website management, it is not essential for loading the main components of the page. Tracking codes by Google Analytics and Facebook are typical sources of such third-party code. For example, you can have third-party code in your HTML for analyzing your website for monitoring purposes. Instead, it might be in the wrong place at the wrong time. And if the JS code is in a place where it is unnecessary to render the rest of the page, the rendering process will take longer for no reason. Naturally, the longer the JS file, the longer the execution time. Whenever it finds a link to a JS file or comes across inline JS – the JS code written within HTML – it stops the parsing process to fetch and execute the JS code. As the web browser starts loading your web page, it parses the entire HTML before loading the page. However, the problem is the wrong execution time. Of course, not all JavaScript is render-blocking, and you need JS to add dynamic components to your website for more interactivity. However, unused JS files can be render-blocking, meaning that their presence in the code can cause the webpage to take more time to load and render the essential elements necessary for a good user experience.Ħ Practical Tips to Eliminate Render-Blocking Resources on WordPress Usually, it is above-the-fold content – the most important elements the viewer sees on the front page before scrolling down. ![]() What Is Unused JavaScript and How to Identify the Causes?Īs the name suggests, unused JavaScript consists of JS files that a webpage doesn’t use to render main elements or files that may be used later – the page can load and display the primary content without such files. Fix Automatically With a WordPress Plugin.How to Remove Unused JavaScript on WordPress?.How Are UX and SEO Affected by Unused JavaScript Files?.What Is Unused JavaScript and How to Identify the Causes?.So, let’s start by first looking into what it means to reduce unused JavaScript. As such, the article will also discuss efficient tools which can quickly identify the root cause of the issue and prevent you from resolving it repeatedly. ![]() As you add more elements to your website to make it more interactive and visually appealing, you will likely have to reduce unused JavaScript once again. Of course, manual fixes may only solve the problem for the time being. ![]() But there’s a lot more that goes on behind the scenes.Īnd as a website manager or owner, is it something that should cause worry? Does it affect a website’s rank on Google? And what about user experience? More importantly, what can you do to fix it? If you’re looking for answers to all of these questions, this article will explain in detail what the message means, what causes it to come up as a problem on website checking tools, and what common manual fixes you can implement to eliminate it. On the face of it, the message seems straightforward: remove unused JavaScript code to improve your website speed and performance. For instance, you may have seen the message when you checked your website through PageSpeed Insights – an online website testing tool – and want to optimize your site to eliminate the error. If you’re someone managing a website, you’ll likely be familiar with the “reduce unused JavaScript” message that pops up on a website checking tool whenever you have some irrelevant JavaScript code on specific web pages. ![]()
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