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WP Add Custom CSS vs Multiple Themes (2026)

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

WP Add Custom CSS

WP Add Custom CSS

4.8(90)

60K+ active installs

Free

Updated 7 months ago
View WP Add Custom CSS
VS
Multiple Themes

Multiple Themes

4.7(50)

10K+ active installs

Free

Updated 1 year ago
View Multiple Themes

Quick Verdict

As of April 2026, WP Add Custom CSS has a higher user rating (4.8/5 from 90 reviews) and leads in active installations (60K+ vs 10K+). Both are free WordPress plugins. WP Add Custom CSS has accumulated 991K+ total downloads while Multiple Themes has 407K+.

Detailed Comparison

Rating
4.8/5WP Add Custom CSS
◄
Multiple Themes4.7/5
Total Reviews
90WP Add Custom CSS
◄
Multiple Themes50
Active Installs
60K+WP Add Custom CSS
◄
Multiple Themes10K+
Total Downloads
991K+WP Add Custom CSS
◄
Multiple Themes407K+
Support Resolution
N/AWP Add Custom CSS
Multiple ThemesN/A
Last Updated
7 months agoWP Add Custom CSS
◄
Multiple Themes1 year ago
First Released
2014WP Add Custom CSS
Multiple Themes2012
Age
12 yearsWP Add Custom CSS
Multiple Themes14 years
WP Requires
4.0+WP Add Custom CSS
Multiple Themes3.4+
PHP Requires
false+WP Add Custom CSS
Multiple Themesfalse+
Business Model
FreeWP Add Custom CSS
Multiple ThemesFree
Latest Version
1.2.1WP Add Custom CSS
Multiple Themes7.1.1

Rating Breakdown

WP Add Custom CSS

4.8/5(90 reviews)
5
91%
4
2%
3
2%
2
2%
1
2%

Multiple Themes

4.7/5(50 reviews)
5
92%
4
0%
3
0%
2
2%
1
6%

Recent Reviews

WP Add Custom CSS Reviews

by Jesko Bendmann

love it

simple and one click access. great plugin.

by danielepais

It does exactly what it says in the tin

Great simple and effective plugin.

by skylabb

Great plugin with a couple issues

I want to like this plugin but there are a couple things needed improvement. Having the option to choose output method is great, but useless when it’s not working. The “Use a CSS file” option does not

Multiple Themes Reviews

by Lovro Hrust

Fabulous!

I didn’t expect it to work with wp 6.7.1 and both combination of classic theme and FSE theme. But it works! This was such a pleasant surprise! Excellent idea and realization. I would only suggest that

by Jonathan Hinson

Brilliant. Thank you.

It’s just great. Thank you to the creator of this, and to those who now maintain this plugin.

by fadiaalnahari

upgrade plugin

it’s not working with WordPress 6.4.1 please upgrade it thank you

Frequently Asked Questions

Is WP Add Custom CSS or Multiple Themes more popular?
WP Add Custom CSS has 60K+ active installations while Multiple Themes has 10K+. WP Add Custom CSS is the more widely-used plugin as of April 2026.
Which has better ratings — WP Add Custom CSS or Multiple Themes?
WP Add Custom CSS has a 4.8/5 rating from 90 reviews, while Multiple Themes has a 4.7/5 rating from 50 reviews.
Are WP Add Custom CSS and Multiple Themes free?
WP Add Custom CSS is free and Multiple Themes is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — WP Add Custom CSS or Multiple Themes?
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?
WP Add Custom CSS was last updated 7 months ago and Multiple Themes was last updated 1 year ago.

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