by SilkyPress 4.4 (104 reviews)

Simple Custom CSS and JS

Name: Simple Custom CSS and JS
Rating: 4.4 (104 reviews)
Author: SilkyPress

Easily add Custom CSS or JS to your website with an awesome editor.

Simple Custom CSS and JS ranks #101 among WordPress.org plugins with 600,000+ active installations, is #9 of 1,182 in the Editor & Writing category, a 4.4/5 rating from 104 reviews, and was last updated Oct 8, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

v3.54.3 Current Version v3.54.3

Updated 3 weeks ago Last Update on 08 Oct, 2026

Refreshed 5 days ago Last Refreshed on

#9 of 1,182 in Editor & Writing Top 1% by installs Downloads +187.7% this week Actively maintained

View on WordPress.org

Rank

#101

— No change

Active Installs

600K+

-8.8%

KW Avg Position

1.2

— No change

Downloads

10.1M

+2,030 today

Support Resolved

75%

— No change

Rating

88%

Review 4.4 out of 5

4.4 (104 reviews)

Next Milestone 700K

Total Progress 47.4%

600K+ 700K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Need 52,632 more installs to reach 700K+

Rank Changes

Current #101

Change

Best #

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.4

104 reviews

Overall 88%

82 (79%)

4 (4%)

2 (2%)

12 (12%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

75%

Resolution Rate

Security History

Source: WPVulnerability

1 known vulnerability on record · 0 in the last 24 months · checked 2 weeks ago

Jul 24, 2017

Simple Custom CSS and JS [custom-css-js] < 3.4

CVE-2017-2285 · Fixed in v3.4

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Plugin Details

Version: 3.54.3
Last Updated: Oct 08, 2026
Requires WP: 4.2+
Tested Up To: 7.1
PHP Version: 5.2.4 or higher
Author: SilkyPress

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.4
Reviews: 104
Support Threads: 4
Resolved: 75%

Keywords

add style custom css custom js customize theme site css

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to add custom CSS or JS without editing theme or plugin files. It solves the problem of customizing site appearance and behavior safely, with changes preserved across theme switches.

Text editor with syntax highlighting
Inline or external file output
Print in header or footer
Add CSS or JS to frontend
Add CSS or JS to admin
Add unlimited code snippets
Retains changes on theme switch

Frequently Asked Questions

Common questions about Simple Custom CSS and JS

If you write multiple codes of the same type (for example: two external CSS codes), then all of them will be printed one after another

No, the code is printed exactly as in the editor. It is not modified/checked/validated in any way. You take the full responsability for what is written in there. My code doesn't show on the website Try one of the following: 1. If you are using any caching plugin (like "W3 Total Cache" or "WP Fastest Cache"), then don't forget to delete the cache before seing the code printed on the website. 2. Make sure the code is in Published state (not Draft or in Trash). 3. Check if the wp-content/uploads/custom-css-js folder exists and is writable

Yes.

The CSS and JS are independent of the theme and they will persist through a theme change. This is particularly useful if you apply CSS and JS for modifying a plugin's output.

For the moment only plain CSS is supported, but you can check out the Pro version in case you need a CSS preprocessor.

Yes. You can upload an image to your Media Library, then refer to it by its direct URL from within the CSS stylesheet. For example: div#content { background-image: url('http://example.com/wp-content/uploads/2015/12/image.jpg'); }

Yes.

By default only the Administrator will be able to publish/edit/delete Custom Codes. On the plugin activation there is a role created called Web Designer. You can assign this role to a non-admin user in order to allow to publish/edit/delete Custom Codes. On the plugin's Settings page there is an option to remove this role. My website has HTTPS urls, but the codes are linked as HTTP The URL for the linked Codes is built just like the URL for other media (from Media Library) by using the WordPress Address option found on the WP Admin -> Settings -> General page, as shown in this screenshot. If the WordPress Address has HTTPS in the url, then the Custom Codes and all the other media will have HTTPS in the url.