John Regan

<p>Add Custom CSS to your WordPress site without any hassles.</p>
<p>An easy-to-use WordPress Plugin to add custom CSS styles that override Plugin and Theme default styles. This plugin is designed to meet the needs of administrators who would like to add their own CSS to their WordPress website. Styles created with this plugin will render even if the theme is changed.</p>
<p><strong>New in Version 4.0.7</strong></p>
<ul>
<li>Tested for compatibility with WP 6.7.2</li>
<li>Tested for compatibility with PHP 8.4</li>
</ul>
<h3>Features</h3>
<ul>
<li>AMP Support</li>
<li>Customizer Control (live preview)</li>
<li>Useful Code Syntax Highlighter</li>
<li>Code linting (error checking)</li>
<li>No configuration needed</li>
<li>Simple interface built on native WordPress UI</li>
<li>Virtually no impact on site performance</li>
<li>No complicated database queries</li>
<li>Thorough documentation</li>
<li>Allows Administrator access on WP Networks (Multisite)</li>
</ul>
<h3>Usage</h3>
<ol>
<li>
<p>Navigate to Appearance > Custom CSS in the Admin Menu</p>
</li>
<li>
<p>Enter in valid CSS styles</p>
</li>
<li>
<p>Click “Update Custom CSS”</p>
</li>
<li>
<p>View your changes in the Front End of your website</p>
</li>
</ol>
<h3>Help</h3>
<p><a href="https://github.com/johnregan3/simple-custom-css/wiki" title="Simple Custom CSS Wiki" rel="nofollow ugc">Simple Custom CSS Wiki</a></p>
<p><a href="https://wordpress.org/support/plugin/simple-custom-css" title="Support Forum" rel="ugc">Support Forum</a></p>


Simple Custom CSS Plugin

This is one of the best Custom CSS Plugin I've ever used. I've been using it since 2016. This plugin works very well.

Simple but works really good.

Add Custom CSS to your WordPress site without any hassles.

Bytes.co

<p>Harness the power of pre-processed CSS and minified JS in your theme or plugin, without any complicated installs or build tools. Simply tell WP Compiler where to find your source files and where to put the compiled results, then throw your install into Dev Mode. WP Compiler watches your source folders for you, and recompiles your CSS and JS on any file change. WP Compiler supports both SCSS and LESS precompilers for CSS, to suit anyone’s preference.</p>
<p>When you’re ready to launch a new site, just turn off Dev Mode, and your styles and javascript will be compiled & minimized and comments & source maps will be removed. With Dev mode disabled, Compiler will stop watching source directories, so there is no effect on site performance, but you can still apply a quick change at any time, by clicking the compile button in the admin toolbar.</p>
<p>WP Compiler relies on <a href="http://leafo.github.io/scssphp/" rel="nofollow ugc">scssphp</a>, <a href="http://lessphp.typesettercms.com/" rel="nofollow ugc">lessphp</a>, and <a href="https://www.minifier.org/" rel="nofollow ugc">minify</a>.<br />
Specific issues with the underlying compilation libraries should be submitted to their respective developers.</p>


WP Compiler

Harness the power of pre-processed CSS and minified JS in your theme or plugin, without any complicated installs or build tools.

Simple Custom CSS Plugin vs WP Compiler