Code minimization, or minimizing, removes all unnecessary characters from JavaScript source code without changing its functionality. It involves removing extra spaces, extra comments, and other elements and introducing short variable and function names. Minifying JavaScript code results in compact file size.
You can get advice on minifying in our free Minify JS tool. We created this tool to analyze your source code and find points that need possible intervention and code size reduction. We will tell you how you can use the tool to optimize your code.
Here are some tips about site performance:
What is Minification in JavaScript?
Let’s find out what minification is. It is the process of minimizing the source code and markup in web pages and script files. This method allows you to reduce scripts loading time and bandwidth usage on websites. Minifications significantly speed up your website, and this, in turn, has a positive effect on Google rankings. It’s also very useful for users who browse your site from mobile devices and want to save their mobile traffic. You can minify JS, HTML, CSS, PHP, node NPM, etc.
We designed the JavaScript minification test for your convenience. It’s free and quick! Use the tool to find potential optimization moments.
Using JavaScript Minification Test: A Step-by-Step Guide
Well, it’s important to know how you can optimize your site’s pages. One way to speed up the loading of your site’s pages is to minimize the source code. Remove unnecessary code elements so that your code is optimized. It will positively affect search engine rankings and the user experience of your site.
Let’s look at how to use our JS minifier to optimize the source code of your site pages. We used our sitechecker.pro site as an example. In two normal steps, you can get useful hints.
Step 1: Insert your URL
Enter the page address of the site in the blank line on the menu of the tool page. Click the blue arrow button to start testing the page. Keep in mind that you will get recommendations for testing a specific web page address. In the example, we showed you the home page of our site.
Step 2: JS minify Results Analysis
After the scan is complete, you’ll get hints from our extension about which snippets you can reduce and optimize your source code with webpack. Look through all the sections of the results page and get useful information on how you can make your pages even faster and more optimized.
Why Is It Bad For Site & SEO
Source code minification can disrupt the operation of complex censors on your site, such as themes, plugins, gulp, and add-ons. In addition, you should do minification in conjunction with advanced performance tweaks. Keep in mind that if you do not act comprehensively, you’re unlikely to get a good visual result. As for the optimization for search engines, the introduction of minification in your source code can not do any harm, in itself, not good.
Use this method only if you know how to do it. Otherwise, you can cause great harm to the site. You may make mistakes that will interfere with the promotion in search networks. You can make mistakes that will be difficult to concat. To avoid this, ask experienced professionals who will optimize the code for your WordPress or Shopify website.
Common Reasons & Problems That Make JS Too Big
You might think that JavaScript source code is pretty straightforward. Nevertheless, it is worth bearing in mind that this programming language has many nuances and peculiarities, and you need to keep all of these features in mind while minimizing them. JavaScript Closure Compiler tweaks lead to several common mistakes, one of which is large code. To keep your code optimized on the site’s pages, use the minimization toplevel method.
When you start optimizing and minifying your code in the studio, it will lose its functionality and original form. Just in case, we recommend that you save a copy. It will help you go back to the previous step if you inadvertently make mistakes while changing the source code version. The sizes of the code are affected by how much redundancy you will use. Remove unnecessary comments that have no value. Remove spaces and compress semicolons. And don’t forget about Grunt – a task manager for auto routine operations.
How to Minify Your JavaScript Files
Check whether your webpage needs JS compressing using the tool above. It is advisable to use minification when the JavaScript file size is over 25 KB. If the page has some unoptimized parts of JavaScript, you will see a similar note as in the picture below. It is advisable to use minification when the JavaScript file size is over 25 KB.
In addition, you must know the logic of modern minifiers:
- Tools parse JavaScript code into a syntax tree (like Magento).
- Analyze and optimize the code.
- Write the resulting code from the syntax tree.
Analyze not only JS Minification but the entire site!
Make a full audit to find out and fix your technical SEO in order to improve your SERP results.
Should you minify JavaScript?
Does minification improve performance?
How is minification different from obfuscation, compression, encryption, or uglification?
- Uglify is JavaScript library documentation for minimizing JavaScript files, like jQuery. This un method allows you to improve performance by reducing readability significantly.
- Encryption is the process of converting samples of data into encrypted data.
- Obfuscator is used to obfuscate business logic and make reverse engineering more difficult.
- Data compression is a process that reduces the number of bits needed to represent API data.
