PluginSift

Simple Custom CSS and JS vs Add Custom Codes – Insert Header… (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Simple Custom CSS and JS

Simple Custom CSS and JS

4.4(102)

700K+ active installs

Free

Updated 4 weeks ago
View Simple Custom CSS and JS
VS
Add Custom Codes – Insert Header…

Add Custom Codes – Insert Header…

5(6)

1.0K+ active installs

Free

Updated 2 weeks ago
View Add Custom Codes – Insert Header…

Quick Verdict

As of April 2026, Add Custom Codes – Insert Header… has a higher user rating (5/5 from 6 reviews) while Simple Custom CSS and JS leads in active installations (700K+ vs 1.0K+). Both are free WordPress plugins. Simple Custom CSS and JS has accumulated 10M+ total downloads while Add Custom Codes – Insert Header… has 17K+.

Detailed Comparison

Rating
4.4/5Simple Custom CSS and JS
►
Add Custom Codes – Insert Header…5/5
Total Reviews
102Simple Custom CSS and JS
◄
Add Custom Codes – Insert Header…6
Active Installs
700K+Simple Custom CSS and JS
◄
Add Custom Codes – Insert Header…1.0K+
Total Downloads
10M+Simple Custom CSS and JS
◄
Add Custom Codes – Insert Header…17K+
Support Resolution
100%Simple Custom CSS and JS
Add Custom Codes – Insert Header…N/A
Last Updated
4 weeks agoSimple Custom CSS and JS
►
Add Custom Codes – Insert Header…2 weeks ago
First Released
2015Simple Custom CSS and JS
Add Custom Codes – Insert Header…2017
Age
11 yearsSimple Custom CSS and JS
Add Custom Codes – Insert Header…9 years
WP Requires
3.0.1+Simple Custom CSS and JS
Add Custom Codes – Insert Header…6.6.2+
PHP Requires
5.2.4+Simple Custom CSS and JS
Add Custom Codes – Insert Header…7.4+
Business Model
FreeSimple Custom CSS and JS
Add Custom Codes – Insert Header…Free
Latest Version
3.52Simple Custom CSS and JS
Add Custom Codes – Insert Header…5.0

Rating Breakdown

Simple Custom CSS and JS

4.4/5(102 reviews)
5
79%
4
4%
3
4%
2
2%
1
11%

Add Custom Codes – Insert Header…

5/5(6 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Simple Custom CSS and JS Reviews

by ishraqued

Splendid

Great Plugin This topic was modified 2 days, 7 hours ago by ishraqued.

by michaelmatzkin

Great customer support and response to my need

I appreciate you addressing what had been an incompatibility with another plugin. This fix helps me make better use of your product.

by Heath Woodward

Just what I was looking for

Works perfectly. Great plugin.

Add Custom Codes – Insert Header… Reviews

by vmadien

Very good

Works perfectly. The syntax highlighter is sometimes incorrect, but it doesn’t affect functionality. Thanks to the developers.

by Ehsan Fotoohabadi

Easy to use

Very good and easy to use

by anilnarayanan

Great

This is the plugin I’m waiting for a long time while,and I’m very happy with this plugin This topic was modified 3 years, 7 months ago by anilnarayanan.

Frequently Asked Questions

Is Simple Custom CSS and JS or Add Custom Codes – Insert Header… more popular?
Simple Custom CSS and JS has 700K+ active installations while Add Custom Codes – Insert Header… has 1.0K+. Simple Custom CSS and JS is the more widely-used plugin as of April 2026.
Which has better ratings — Simple Custom CSS and JS or Add Custom Codes – Insert Header…?
Simple Custom CSS and JS has a 4.4/5 rating from 102 reviews, while Add Custom Codes – Insert Header… has a 5/5 rating from 6 reviews.
Are Simple Custom CSS and JS and Add Custom Codes – Insert Header… free?
Simple Custom CSS and JS is free and Add Custom Codes – Insert Header… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Simple Custom CSS and JS or Add Custom Codes – Insert Header…?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Simple Custom CSS and JS was last updated 4 weeks ago and Add Custom Codes – Insert Header… was last updated 2 weeks ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.