![]() This first block is regular, unminified JavaScript: // program to check if the string is palindrome or not ![]() Unminified vs Minified JavaScript Code Examples You may have to make some further changes to the code, too - for example, inlining functions, removing block delimiters, using implicit conditionals, or rewriting local variables. You’ve removed all the unnecessary white spaces, comments, newline characters, and everything that initially made the code legible. Once it’s been minified, it should be almost unreadable to the naked eye. To minify JavaScript code, you must parse it, compress it, and get the output. Some work goes into making code more compact while keeping it functional. However, the process isn’t instantaneous. However, the biggest concern is to minimize the code without altering the functionality.Ĭode minification is possible in all core programming technologies, including HTML, CSS, and - as we’re about to see - JavaScript. Code minification means optimizing code to save space, reduce page load times, and lower website bandwidth usage. Minification is also known as minimization. Kinsta customers can quickly minify JavaScript and CSS files through their MyKinsta dashboard. If you need to create a highly interactive website that runs in all browsers without any obstruction, then JavaScript is the most dependable option you can employ. Hence, alongside HTML and CSS, it’s a proficient choice to pick if you’re interested in web development. ![]() Notably, web browsers can understand JavaScript. For example, JavaScript offers complex elements such as scrolling video jukebox, 2D/3D videos, and interactive maps. Whereas HTML and CSS build a website’s structure, JavaScript adds complex features that bring interactivity to your website to engage the users. Check out the Minify and compress network payloads guide to learn more about tools to minify JS, and some complementary techniques, like compression.Uncover performance bottlenecks to deliver a better user experience and hit your business’s revenue goals. Minification can also be applied to other types of files. ![]() In this guide, we've covered CSS Minification with webpack, but the same approach can be followed with other build tools, like gulp-clean-css for Gulp, or grunt-contrib-cssmin for Grunt. Since CSS files are render-blocking resources, if you apply minification on sites that use large CSS files, you can see improvements on metrics like First Contentful Paint. The report doesn't show "Minify CSS" as "Opportunity" anymore, and has now moved to "Passed Audits" section: Click on Performance and find the Opportunities section.Both files are much smaller, in particular, the animate.css has been reduced in ~26%, saving ~20KB! You can inspect these files, and see that the new versions don't contain any whitespaces. Select the Disable cache checkbox if it isn't already.Press `Control+Shift+J` (or `Command+Option+J` on Mac) to open DevTools.To inspect the size and content of the files: If you got lost in any previous step, you can click here, to open an optimized version of the site. Next, you'll check the result of this optimization with performance tools. This is how the resulting will look like: Take a look at the following CSS block: body ) ,Īfter making the changes a rebuild of the project will be triggered. In production, these characters can be safely removed, to reduce file size without affecting how the browser processes the styles. CSS files can contain unnecessary characters, such as comments, whitespaces, and indentation.
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