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JavaScript optimizers which can minify and generate source maps include UglifyJS and Google Closure Compiler. In addition, certain online tools, such as Microsoft Ajax Minifier,[10] the Yahoo! YUI Compressor or Pretty Diff,[11] can compress CSS files.[citation needed] For minification of HTML code there are the following tools: HtmlCompressor,[12] HTMLMinifier[13] and WebMarkupMin.[14] There is a Power-Shell script named "minifyPS"[15] that is able to shrink PowerShell script code as well as JavaScript code.
minify
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Since html-minifier also uses clean-css and uglify-js, setting minifyJS or minifyCSS to true will embed the settings you have supplied for those minifiers automatically. You can provide your own settings as an object if you want some different methods to be used.
CLI: If you are using the command-line API, it may be helpful to know that the flags come in one of three forms: --foo, --foo=bar, or --foo:bar. The form --foo is used for enabling boolean flags such as --minify, the form --foo=bar is used for flags that have a single value and are only specified once such as --platform=, and the form --foo:bar is used for flags that have multiple values and can be re-specified multiple times such as --external:.
This is a limited special-case of build that transforms a string of code representing an in-memory file in an isolated environment that's completely disconnected from any other files. Common uses include minifying code and transforming TypeScript into JavaScript. Here's an example:
This setting lets you pass a regular expression to esbuild to tell esbuild to automatically rename all properties that match this regular expression. It's useful when you want to minify certain property names in your code either to make the generated code smaller or to somewhat obfuscate your code's intent.
This is a separate setting instead of being part of the minify setting because it's an unsafe transformation that does not work on arbitrary JavaScript code. It only works if the provided regular expression matches all of the properties that you want mangled and does not match any of the properties that you don't want mangled. It also only works if you do not under any circumstances reference a mangled property indirectly. For example, it means you can't use obj[prop] to reference a property where prop is a string containing the property name. Specifically the following syntax constructs are the only ones eligible for property mangling:
When enabled, the generated code will be minified instead of pretty-printed. Minified code is generally equivalent to non-minified code but is smaller, which means it downloads faster but is harder to debug. Usually you minify code in production but not in development.
You should probably also set the target option when minification is enabled. By default esbuild takes advantage of modern JavaScript features to make your code smaller. For example, a === undefined a === null ? 1 : a could be minified to a ?? 1. If you do not want esbuild to take advantage of modern JavaScript features when minifying, you should use an older language target such as --target=es6.
By default esbuild won't minify the names of top-level declarations. This is because esbuild doesn't know what you will be doing with the output. You might be injecting the minified code into the middle of some other code, in which case minifying top-level declaration names would be unsafe. Setting an output format (or enabling bundling, which picks an output format for you if you haven't set one) tells esbuild that the output will be run within its own scope, which means it's then safe to minify top-level declaration names.
If your cache is growing significantly, this could mean one of your CSS or JS files is dynamic and changes on every pageview. In that case, you would need to add the file to the ignore list, else the cache would grow indefinitely (because obviously the original files themselves are dynamic and when you minify, the plugin sees a different file).
JSMin is a dedicated command line JavaScript minification tool and library to minify the JavaScript code and make the code as lightweight as possible. Just install JSMin as a global script, and it will remove all the whitespaces and unnecessary comments from the code very effectively. As a result, it can instantly reduce your JavaScript file size by around 50%.
UglifyJS is one of the most popular JavaScript minification tools. It can parse, minify and compress JavaScript code. Besides, the tool generates a source map file while compressing to track back to your original code.
JSCompress can minify and reduce the size of your JavaScript by 80%. It offers a simple click-and-go interface where you can either paste your code or upload your .js file for minification. You will receive the minified output as clean, copyable code rather than a .js file. Notably, the tool uses UglifyJS and Babel-minify to minify and compress JavaScript.
Minfier.org is one of the most simplistic JavaScript minifiers you can utilize to minify your codes. It uses multiple methods to minify JavaScript code. The tool weights the size of your JavaScript code both before and after the minification. Then it calculates the gain of the script after the minification and displays it on the screen.
Besides, it lets you implement Base62 encode and Shrink variables option while minifying your code. To minify your JS code, copy and paste it into JavaScript and press the pack button. It will automatically generate minified code for you.
W3 Total Cache lets you minify JavaScript, CSS, and HTML with granular control. Besides, it allows you to minify inline, embedded, or any third-party JavaScript or CSS code. It also defers JavaScript and CSS for faster page loading, apart from minification. Moreover, the plugins offer multiple JavaScript minification opportunities for WordPress websites.
WP-Optimize is a WordPress optimization plugin that offers an advanced minification tool to minify CSS and JavaScript alongside clearing cache and optimizing your WordPress website. Also, it empowers you to defer CSS and JavaScript. As a result, the site loads the non-critical assets after the main page load, improving page performance.
Autoptimize is a WordPress minification plugin that aggregates, minifies, and caches non aggregated CSS and JavaScript to reduce page load time and improve the performance of your website. It can minify and cache the scripts, inline the critical JavaScript, and async the non aggregated JavaScript.
Third-party tools, such as Gulp and Webpack, provide workflow automation for bundling and minification, as well as linting and image optimization. By using bundling and minification, the minified files are created prior to the app's deployment. Bundling and minifying before deployment provides the advantage of reduced server load. However, it's important to recognize that bundling and minification increases build complexity and only works with static files.
JS and CSS minification increase page performance and improve the loading time of your site. For example, when minifying JavaScript, you get a lower JS file payload that reduces the time spent parsing scripts. This results in faster page loads and a well-improved page experience.
One of the easiest ways to minify CSS or JS is to use WP Rocket. The plugin can also optimize the CSS delivery, defer JS and delay JS execution. No risks are taken: you have a 14-day money-back guarantee if you see no speed improvements.
In order to enable HTML minify and select which library to use, navigate to Performance > General Settings and scroll down to the Minify section. Enable minification, and choose which library to use:
If you check your site speed with Google PageSpeed Insights you might get the advice to minify your Javascript (JS) and Cascading Style Sheets (CSS) files. Your JS files contain the code for the interactive elements of your website. And in your CSS files, you specify the design of your pages. Minifying those files will decrease your page load time, thereby providing a better user experience.
Stripping all of that down actually makes the file that you send to the user a lot smaller. Because when you minify it, you remove all the extra spaces, all the line breaks, and all the comments. Stripping all that can save up to 30-40%, or even 50% of file size in some cases. There really is no benefit of sending that stuff to the end-users, so minifying saves time and money for everyone.
WP Rocket will now start minifying your CSS and JavaScript files. You can clear your cache in the plugin settings to make sure that it starts using the minified CSS and JavaScript for the next website visitor.
We hope this article helped you minify CSS and JavaScript on your WordPress site. You may also want to see our tutorial on optimizing core web vitals in WordPress and follow our ultimate WordPress performance guide.
Obviously, this is just a small example using a snippet of CSS code, but you can imagine the the amount of space this would save when minifying thousands of lines of code. So, if you wanted to do this manually by hand, technically you could. But you would run a high risk of error and needlessly shave valuable time off or your life!
Paste in your source code or upload the source code file.Optimize the settings for a specific output (if options are available)Click a button to minify or compress the code.Copy the minified code output or download the minified code file.
The easiest way to minify your HTML, CSS and JavaScript in WordPress is to use a plugin. This allows you to optimize your WordPress site files for decreased page load times automatically with a few clicks of a button.
Fast Velocity Minify is another popular, free and powerful WordPress plugin that does more than just minify. It minifies and combines your CSS and Javascript to reduce HTTP requests to your server, thus living up to its name to give you fast velocity page load times. There are addition optimization options available but the default settings work beautifully for most sites. 041b061a72