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Custom CSS and JavaScript

By WP Zone

Developer Tools & Customization / Code Snippets & Custom Code

Reviewed by Omar Dabbas

Trusted WordPress expert with 20+ years of experience evaluating plugins for the WP ecosystem.

Custom CSS and JavaScript Review - In-Depth Analysis

Easily add custom CSS and JavaScript code to your WordPress site with features like draft previewing, revisions, and minification.

Performance Overview

WPS Score

6.86/10

User Rating

4.7/5 (based on 60+ reviews)

Active Installations

10,000+

Update Frequency

Below Average It is calculated using the weighted average of same category plugins.

Security Score

5 / 10 (Medium Risk) It is calculated using the weighted average of all versions.

What It Does

This plugin allows you to add custom site-wide CSS styles and JavaScript code to your WordPress site. It is useful for overriding your theme's styles and adding client-side functionality.

Features include a code editor with syntax highlighting and AJAX saving to avoid reloading the editor at each save. You can save and preview your CSS and JavaScript as a draft that is only applied to logged-in users until you are ready to publish your changes to the public. The plugin also allows you to view and restore past revisions of your CSS and JavaScript.

Additionally, it automatically minifies your custom CSS and JavaScript code to reduce file size. For optimal performance, custom CSS and JavaScript code is served from the filesystem instead of the database.

Now available is the Custom CSS and JavaScript Developer Edition, which allows you to divide your CSS and JavaScript into multiple virtual files to keep your code organized. It supports Sassy CSS (SCSS) and offers live preview for CSS. You can upload and download CSS and JavaScript files individually or in ZIP files.

Access to plugin features is determined by user capabilities. Users with the edit_theme_options capability will enjoy full access. The plugin also introduces a custom capability known as wpz_custom_css_js for enhanced control.

Comparing to Alternatives

Custom CSS and JavaScript is a popular plugin for adding custom code snippets, with several alternatives available that offer similar functionality.

Top alternatives

Strengths

High user rating with 90% five-star reviews
Easy to use for adding CSS and JavaScript snippets
Supports both CSS and JavaScript code insertion
Helps quickly test small code snippets without hassle
Includes a pro version with additional features

Weaknesses

Has a known medium severity security vulnerability with no fix yet
Limited documentation on whether to include script tags
Some users desire more detailed instructions
Security risk score is moderate at 5 out of 10

User Sentiment Analysis

With a strong majority of 5-star ratings and very few low ratings, users generally appreciate the plugin's ease of use and functionality for adding custom code.

Positive highlights

'Great alternative!' — feourives
'Thanks you for your help!!' — serguei9090
'Works great, just what I needed to set up of special fields.' — sloanthrasher
'Makes work easier.' — jamunahernandez14
'Makes adding css snippets a breeze' — dshelton

Common complaints

Weaknesses

Lacks clear instructions on script tag usage
Known security vulnerability remains unpatched
Moderate security risk score may concern cautious users

Who Should Use This?

Best for

Users who need a straightforward and efficient way to add custom CSS and JavaScript snippets to their WordPress site without complex setup.

Not ideal for

Users who prioritize security above all else or require detailed documentation and guidance on code insertion practices, due to the existing vulnerability and limited instructions.

Pricing & Value

Free version includes

The free version allows users to add custom CSS and JavaScript snippets easily, covering most basic needs for site customization.

Pro version

Offers additional premium features to enhance code management and insertion capabilities beyond the free version.

Final Verdict

Custom CSS and JavaScript is a highly rated plugin praised for its simplicity and effectiveness in adding custom code snippets. It serves well for users needing quick and easy CSS and JavaScript insertion with minimal fuss.

However, the presence of a medium severity security vulnerability without a current fix and moderate security risk score means users should weigh the benefits against potential risks, especially if security is a top priority. Alternatives may be considered for those seeking a more secure solution.