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Async JS and CSS
Converts render-blocking CSS and JS files into NON-render-blocking, improving performance of web page.
The facts
- Rating
- 4.2★ from 51
- Active installs
- 700+
- Price
- Free
- Last updated
- 28 Nov 2017
- Added
- Aug 2013
- Requires WP
- 2.6
- Tested up to
- WP 3.7.41
- Downloads
- 114,724
Our analysis
AI-assistedAsync JS and CSS is a WordPress plugin designed to improve website loading speed by handling JavaScript and CSS files asynchronously. It modifies how these files are loaded to reduce render-blocking, which can enhance search engine rankings by speeding up page delivery. The plugin is suitable for webmasters looking to optimise their site's performance based on Google PageSpeed Insights recommendations.
The plugin allows for various methods of loading CSS files, including inline insertion and moving styles to the end of the document. It also detects scripts included in standard WordPress hooks, ensuring that they are loaded in a non-blocking manner. This can be particularly beneficial for sites with multiple plugins that may slow down page rendering.
Best for: Webmasters looking to enhance site performance and SEO.
What it does well
- ✓Improves website loading speed
- ✓Reduces render-blocking JavaScript and CSS
- ✓Offers multiple methods for loading CSS files
- ✓Compatible with wp_enqueue_script and wp_enqueue_style
Where it falls short
- •Last updated in November 2017
- •Known incompatibilities with certain plugins and Internet Explorer 7
- •Limited information on support and updates
Verdict
Async JS and CSS provides a straightforward solution for improving load times, but its outdated status and known issues may limit its effectiveness in some environments.
From the developer
dmikam's own description of Async JS and CSS, lightly tidied.
When your page is loaded by browser – all that stuff placed in HEAD tag is loaded before the page content – in blocking way. So the content is delivered to user in the last moment, after all javascript and css files are loaded.
If you are a webmaster or just want to make your web to make better your positions on search engines (yes, they preffer faster webs), just take a look on Google PageSpeed Insights – you’ll see that one of the mos important things is fastenes and one of the reason why your page is not so fast – is “Render-blocking JavaScript and CSS”.
This plugin makes ALL scripts loaded by other plugins to be loaded in asynchronous way just like Google PageSpeed Insights recommends.
All CSS files will be inserted inline into the document code or moved from the document beginning to the end, just before closing BODY tag (or just where you placed wp_foot() function). There are various methods to do that – they are all in plugin’s configuration page.
Plugin makes all scripts to be loaded asynchronously using wp_enqueue_script and also can detect scrips included inside of wp_head and wp_footer hooks.
All CSS files loaded using wp_enqueue_style can be loaded just before closing BODY tag by four methods:
* inserting <link rel="stylesheet" ...> tag
* inserting <style>@import url(...);</style>
* generating <link rel="stylesheet" ...> tag with javascript after all have loaded
* inserting ALL CSS CODE INLINE into the document (the fastest way)
I was inspired to create this small plugin by Asynchronous Javascript but it works in completely different way.
Known incompatibilities
* Internet Explorer 7 - Some scripts could be loaded impropertly (trying to fix it)
* Plugin - WP JetPack - Share - everithing works but "More" dropdown menú
* Plugin - Google Analyticator<h3>Special thanks</h3>
* NicMic<h3>TODO</h3>
* Inline JS
* Minify JS
* Cache
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