Even when these characters are removed from the JavaScript source code, the JavaScript code’s functionality remains unchanged.Īs a result, your JavaScript code will behave exactly the same even after the minification process. That’s why it’s called “minification”: all of the data that isn’t necessary for the JavaScript to work is deleted from the source code, resulting in a minimised version of JavaScript. Minification in JavaScript is the process of eliminating any characters from the source code that aren’t required. Now let’s look into how and why we need to minify JavaScript and CSS code in detail. So to avoid the instance of web pages loading slower, programmers minify their codes.įiles containing codes made of frontend programming languages such as HTML, CSS, and JavaScript are the ones that are minified so that the browser can read the codes faster. The unnecessary features refer to whitespaces, line breaks, comments, and block delimiters.Īdding these characters to the code allows developers to interpret what the code is about and makes the code more understandable for us humans so that we can quickly rectify any problems in the source code.īut these characters are the same characters that contribute to the slow loading of the web pages. Known as ‘minify’ or ‘minification,’ minifying is the process of minimizing the unnecessary characteristics in the source code. However, there is one principle that will assist you in improving the performance of your project. Creating such a visually stunning and smooth-loading webpage, on the other hand, is not that simple. You may also want to use a build process to do this minification up front if possible.As a frontend developer, your job is to create beautiful websites and a website that runs smoother and loads quicker. # WordPressĪ number of WordPress plugins can speed up your site by concatenating, minifying, and compressing your scripts. You can check this with the React Developer Tools extension. If your build system minifies JS files automatically, ensure that you are deploying the production build of your application. Use Terser to minify all JavaScript assets from static content deployment, and disable the built-in minification feature. There are also templates that provide this functionality. # JoomlaĪ number of Joomla extensions can speed up your site by concatenating, minifying, and compressing your scripts. You can also configure more advanced aggregation options through additional modules to speed up your site by concatenating, minifying, and compressing your JavaScript assets. # Stack-specific guidance # DrupalĮnsure you have enabled Aggregate JavaScript files in the Administration > Configuration > Development page. webpack v4 includes a plugin for this library by default to create minified build files. Terser is a popular JavaScript compression tool. Minification is the process of removing whitespace and any code that is not necessary to create a smaller but perfectly valid code file. The Opportunities section of your Lighthouse report lists all unminified JavaScript files, along with the potential savings in kibibytes (KiB) when these files are minified: # How to minify your JavaScript files Minifying JavaScript files can reduce payload sizes and script parse time.
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