{"id":30577,"date":"2018-11-18T16:04:27","date_gmt":"2018-11-18T22:04:27","guid":{"rendered":"https:\/\/getflywheel.com\/?p=30577"},"modified":"2025-11-25T10:00:31","modified_gmt":"2025-11-25T16:00:31","slug":"how-to-improve-a-wordpress-sites-performance-with-minification","status":"publish","type":"resource","link":"https:\/\/wpengine.com\/case-studies\/resources\/how-to-improve-a-wordpress-sites-performance-with-minification\/","title":{"rendered":"How to Improve a WordPress Site’s Performance with Minification"},"content":{"rendered":"\n

Site speed remains a perennial concern for pretty much all site owners. While there are several ways you can improve your site\u2019s speed, there\u2019s one often-overlooked (yet highly effective) technique to consider\u2014minification.<\/p>\n\n\n\n

In simple terms, minification optimizes your site\u2019s code to make it smaller in size and, therefore, more efficient to run. While this can seem like a small concern, it\u2019s actually surprisingly effective.<\/p>\n\n\n\n

In this article, we\u2019ll introduce you to the concept of minification and how it works. We\u2019ll also show you several ways you can utilize this method yourself, without getting into the code. Let\u2019s get started!<\/p>\n\n\n\n\n\n

An Introduction to Minification (and How it can Help You)<\/h2>\n\n\n\n

You may already be aware of several ways you can optimize your site speed. Today, we’ll focus on the specifics of minification.<\/p>\n\n\n\n

One of the potential reasons behind long load times is inefficiently written code. Most site owners rarely (if ever) need to code anything manually nowadays, so you might not even be able to tell if your code is causing your site to get sluggish. However, by using a process known as minification<\/a>, you can check for yourself.<\/p>\n\n\n\n

If you\u2019re no coder, this might seem intimidating, but don\u2019t worry. Minification is actually a straightforward process that simply involves optimizing CSS, HTML, and JavaScript code. We’ll show you how you can achieve this without needing any coding skills further below. However, before we get there, let\u2019s see how minification works in practice, using the following snippet of CSS:<\/p>\n\n\n\n

h1 {\n    background-color: blue;\n}\n\nh2 {\n    background-color: red;\n}\n\np {\n    background-color: black;\n}<\/code><\/pre>\n\n\n\n
Even having a passing familiarity with CSS, this is pretty easy to decipher. It simply specifies which style should be assigned to different elements on a page. This is because the code is written to be readable to the human eye. To this end, line breaks and extra spaces are used to make each part of the code clearly defined and easier to scan.<\/p>\n\n\n\n
However, this isn\u2019t actually something a computer needs to understand to run the code. In fact, the additional characters make the code \u201cheavier,\u201d and therefore, it takes longer for a computer to read and execute. As such, you can think of minification as the process that turns human-friendly code into machine-friendly code.<\/p>\n\n\n\n
If you were to minify this code, it would look like this instead:<\/p>\n\n\n\n
h1{background-color:blue}h2{background-color:red}p{background-color:black}<\/code><\/pre>\n\n\n\n
This code creates the exact same functionality as the one above but with all the unnecessary parts taken out. While it might not seem like a major difference, the minified code is actually 36% lighter than the original. If you imagine this same principle applied to all code on your page, you can probably see how effective this could be in the long run.<\/p>\n\n\n\n
So, how do you actually do it? There are a few methods at your disposal, and we\u2019ll be looking at them throughout this article. First, let\u2019s see how you can minify code manually.<\/p>\n\n\n\n
How to Minify Code Manually<\/h2>\n\n\n\n
One way you can minify code is doing it yourself. This is particularly useful if you\u2019re writing your own code, such as when creating a theme or plugin. However, going through your code with a fine-tooth comb can be taxing, if not impossible, depending on the amount.<\/p>\n\n\n\n
Fortunately, there are plenty of tools to help you generate minified code in a matter of seconds. One such example is Minify<\/a>, which works with both CSS and JavaScript:<\/p>\n\n\n\n
\"The<\/figure>\n\n\n\n
Simply paste the code you want to compress into the text box, click Minify, and the code will instantly be returned in its new form. You\u2019ll even see a summary of just how much lighter the new version is compared to the original:<\/p>\n\n\n\n
\"An<\/figure>\n\n\n\n
When you need to minify HTML code, we recommend HTML Minifier<\/a> for the job:<\/p>\n\n\n\n
\"HTML<\/figure>\n\n\n\n
This tool is particularly interesting because it provides plenty of options regarding how the code should be compressed. You can use the settings on the right to tailor the final output to your liking.<\/p>\n\n\n\n
While minifying code manually can certainly be useful, most of the time you\u2019ll likely want to automate the process. Next up, we\u2019ll look at how you can do exactly that.<\/p>\n\n\n\n
3 WordPress Plugins to Help you Minify Code Automatically<\/h2>\n\n\n\n
By far the easiest way to implement minification is by using a WordPress plugin<\/a> to do the job for you. Such a plugin will automatically minify your code as soon as it\u2019s called on.<\/p>\n\n\n\n
This means you can minify your code without having to look at it yourself. With this in mind, let\u2019s look at some of the best minification plugins!<\/p>\n\n\n\n
1. Autoptimize<\/a><\/h2>\n\n\n\n
\"feature<\/figure>\n\n\n\n
If you were worried that minification would be a complex process, Autoptimize<\/a> is the perfect counterpoint. This is a \u201cset-and-forget\u201d solution that will automatically minify all your site\u2019s scripts with no input required on your part. You simply install and activate the plugin, and it takes care of the rest. However, if you do wish to get into the technical side of things, the plugin also offers several advanced configuration options.<\/p>\n\n\n\n
Key features<\/h3>\n\n\n\n