Add custom CSS, JS, PHP, tracking code. Very easy to use!
As of April 2026, Custom CSS is a WordPress custom js plugin with 1.0K+ active installations and a 2.5/5 rating from 17 reviews. It has been downloaded 69K+ times in total. Requires WordPress 4.0.0+ and PHP false+. Available on WordPress.org since 2015. Last updated 8 years ago — may have compatibility concerns. Downloads are up 71% this week. Top alternative: Simple Custom CSS and JS.
Create custom CSS and JS codes. Delivered with our awesome Conditional Logic, you can easily specify
where you want to your custom CSS code appear. You can write your CSS and JS codes inside
nice ACE editor with syntax highlighter.Codes will be still presented, after you change the theme,
so this is really good way to write CSS adjustments into your theme.
No way to add ANY custom code, but there is a huge “upgrade to premium” button.
Worthless. Just trys to force you to buy the 100 version
I am fed up with you inserting spam/advertisements into my WP dashboard for other products you sell. I have deleted the plugin and will tell others not to bother – if you do this kind of dodgy stuff, who knows what else is being put in there?
Like has been stated before. The free version is not actually usable. It is just a play to make you pay to write more than one block of css. Yes. Just one block of code is free. The rest you have to pay to include.
GARBAGE APP. Turn away forever. There are many plugins that do this for free, or even better, you can just edit and upload your own css files to the site. Stupid app.
This app allows you to add only 1 piece of code, for instance:
.class {
color: #FFFFFF;
}
after which it requires you to purchase the pro version to add more code. Considering you don’t even need an app to do such a small modification, it doesn’t even make sense to install this app.
| WordPress | 4.0.0+ requiredTested up to 4.6.30 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.