{"id":424596,"date":"2024-03-07T10:03:57","date_gmt":"2024-03-07T10:03:57","guid":{"rendered":"https:\/\/webkul.com\/blog\/?p=424596"},"modified":"2024-04-08T09:50:40","modified_gmt":"2024-04-08T09:50:40","slug":"generate-and-use-critical-css-in-magento-2","status":"publish","type":"post","link":"https:\/\/webkul.com\/blog\/generate-and-use-critical-css-in-magento-2\/","title":{"rendered":"Critical CSS in Magento 2"},"content":{"rendered":"\n

What is critical CSS in Magento 2?<\/strong><\/h3>\n\n\n\n

In Magento 2<\/a>, Critical CSS is a technique that extracts the CSS for above-the-fold(without scrolling down) to render content to the user as fast as possible.<\/p>\n\n\n\n

In easy words, whatever we see on a website without scrolling is Critical CSS.<\/p>\n\n\n\n

Let’s say you have a complicated webpage with numerous CSS files.

The home page will not be rendered until all of those CSS files are loaded, therefore we can create a critical CSS file that has all of the styles required to generate the basic structure of the home page.<\/p>\n\n\n\n

As a result, the homepage will be shown, and all non-critical CSS files will be loaded asynchronously.<\/p>\n\n\n\n

Use of critical CSS<\/strong> in Magento 2<\/strong><\/h3>\n\n\n\n

Before showing a page, a browser needs to download and parse CSS files, which makes CSS a rendering-blocking resource.

If CSS files are large or network conditions are poor, CSS file requests can considerably increase the time it takes for a web page to render.

Using inlined critical CSS in the head increases rendering speed and performance, especially in poor network conditions.

All non-critical styles will load asynchronously, allowing us to drastically reduce the time it takes to render our websites for the first time.<\/p>\n\n\n\n

How to enable Critical CSS?<\/strong><\/h3>\n\n\n\n

1. Using Admin Panel<\/strong><\/p>\n\n\n\n

To enable Critical CSS from the admin panel, navigate.<\/p>\n\n\n\n

Stores > Settings > Configuration > ADVANCED > Developer tab > CSS Settings<\/p>\n\n\n\n

\"Screenshot-from-2024-02-27-12-35-45\"<\/figure>\n\n\n\n

Note: <\/strong>In production mode, the Developer Tab is disabled, in that case, you must enable it from the command line (CLI).<\/p>\n\n\n\n

2. Using Command Line(CLI)<\/strong><\/p>\n\n\n\n

To enable critical CSS via the Command Line, type the following command:<\/p>\n\n\n\n

php bin\/magento config:set dev\/css\/use_css_critical_path 1<\/pre>\n\n\n\n
Note: <\/strong>Please ensure your theme contains a critical.css file whereas the other non-critical path will load asynchronously.<\/p>\n\n\n\n
How to set up Critical CSS?<\/strong><\/h3>\n\n\n\n
The \u2018critical\u2019 CSS file should be located in,<\/p>\n\n\n\n
app\/design\/frontend\/<your_vendor_name>\/<your_theme_name>\/web\/css\/critical.css<\/pre>\n\n\n\n
The default Luma theme critical CSS file is located in,<\/p>\n\n\n\n
app\/design\/frontend\/Magento\/luma\/web\/css\/critical.css<\/pre>\n\n\n\n
The critical CSS file path can also be configured in<\/p>\n\n\n\n
app\/design\/frontend\/<your_vendor_name>\/<your_theme_name>\/Magento_Theme\/layout\/default_head_block.xml<\/code><\/p>\n\n\n\n
That’s all you need to do. I hope this helps.<\/p>\n\n\n\n
Reference: Magento DevDocs CSS Critical Path<\/a><\/p>\n\n\n\n
You can also check our other related blogs<\/p>\n\n\n\n
How to remove JS and CSS in Magento 2 using layout XML<\/a><\/p>\n\n\n\n
Understanding Magento Theme<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
What is critical CSS in Magento 2? In Magento 2, Critical CSS is a technique that extracts the CSS for above-the-fold(without scrolling down) to render content to the user as fast as possible. In easy words, whatever we see on a website without scrolling is Critical CSS. Let’s say you have a complicated webpage with […]<\/a><\/p>\n","protected":false},"author":369,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-424596","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow to create an use critical CSS in Magento 2<\/title>\n<meta name=\"description\" content=\"In this article, we will learn how to use Critical CSS in Magento 2. 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