Simple Custom CSS Plugin

by John Regan

View on WordPress.org

59 Quality Score

Active Installs

23/30

100,000 active installs is a respectable but modest footprint, well behind the leading alternatives in this category.

Update Freshness

8/25

Last updated March 2025 and tested against WordPress 6.7.5, which is current, but the score is dragged down by a very low overall maintenance signal.

User Rating

14/15

A 94 out of 100 from 159 ratings is excellent, indicating that the people who do use this plugin tend to love it.

Support Health

8/15

Zero support threads opened and zero resolved is a neutral signal, suggesting either few problems or simply that users go elsewhere for help.

WP Compatibility

8/15

It requires WordPress 3.0.1, which is extremely old, and does not declare a PHP version, which is a minor transparency gap for modern hosting.

Scores higher than 8% of indexed plugins

About

Add Custom CSS to your WordPress site without any hassles.

Active Installs 100k+

Rating ★★★★½ 4.7/5

Last Updated 2025-03-11 4:57pm GMT

Requires WordPress 3.0.1+

Tested Up To 6.7.7

✓ No known vulnerabilities

What It Does

Simple Custom CSS Plugin adds a dedicated editor in your WordPress admin where you can paste custom CSS that applies to your entire site. It avoids the need to edit theme files or use a child theme for styling tweaks. The output is scoped globally, so every rule you write loads on every page.

Who It's For

This plugin suits site owners who want to add small CSS tweaks, like colour changes or font adjustments, without touching theme files. It is ideal for beginners, freelancers, or small business operators who do not want to learn a full customiser workflow. Agencies managing a handful of client sites may also find it handy for quick overrides.

Who Should Skip It

Anyone needing site-specific CSS, conditional rules, or scheduled snippets should skip this plugin because it offers only a single global CSS box. Developers building production sites will be better served by a child theme, a full site editor, or a more capable snippet manager.

The Bottom Line

Simple Custom CSS Plugin does one thing, adding a global CSS box, and does it well enough that users rate it 94 out of 100. With 100,000 installs and a 62.38 quality score, it is a solid niche tool but trails the category leaders by a wide margin. Use it for trivial CSS tweaks, and graduate to WPCode or Code Snippets once your needs grow.

Pick WPCode if you want CSS plus PHP, JS, and header or footer snippets with conditional logic in one tool.

Code Snippets 88/100

Choose Code Snippets if you need to run PHP or other code snippets safely rather than just CSS overrides.

Insert Headers And Footers 87/100

Pick Insert Headers And Footers if you mainly need to drop scripts and CSS into specific page locations.

Simple Custom CSS and JS 87/100

Choose Simple Custom CSS and JS if you want separate global, per-page, or admin-area CSS and JS blocks.

White Label CMS 85/100

Pick White Label CMS if your main goal is rebranding the WordPress admin rather than adding CSS.