Best custom javascript plugins for WordPress
The most popular custom javascript plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Custom CSS and JavaScript leads with 10K+ active installs, ahead of TC Custom JavaScript (10K+) and Custom Header Footer Scripts for Customizer (1K+). All 5 plugins tagged “custom javascript” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
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Top 5 custom javascript plugins
- 1.
Custom CSS and JavaScriptThe most installed custom javascript plugin, with 10K+ active installs. Rated 4.7 from 60 reviews, last updated 2 years ago. Tested only up to WordPress 6.6.11.
- 2.
TC Custom JavaScript10K+ active installs. Rated 5.0 from 8 reviews, last updated 3 years ago. Tested only up to WordPress 6.1.16.
- 3.
Custom Header Footer Scripts for Customizer1K+ active installs. Only 2 reviews so far, last updated 3 years ago. Tested only up to WordPress 6.3.14.
- 4.Custom Javascript Inserter
80+ active installs. Only 1 review so far, last updated 10 years ago. Tested only up to WordPress 4.4.34.
- 5.
WP Add Custom CSS and JS20+ active installs. Only 1 review so far, updated 5 months ago. Tested only up to WordPress 6.8.12.
All 5 plugins tagged “custom javascript”

Custom CSS and JavaScript
Down in the last 7 days:4#1,977by WP Zone2 years ago
Easily add custom CSS and JavaScript code to your WordPress site, with draft previewing, revisions, and minification!
- Installs
- 10K+
- Rating
- 4.7(60)
- Downloads
- 35/day

TC Custom JavaScript
Up in the last 7 days:1#2,113by Tiny Code3 years ago
Add custom JavaScript to your site from a professional editor in the WordPress admin.
- Installs
- 10K+
- Rating
- 5.0(8)
- Downloads
- 22/day

Custom Header Footer Scripts for Customizer
Down in the last 7 days:25#5,092by Rupok3 years ago
Add custom script to header and footer through WordPress Customizer. Edit your scripts with CodeMirror editor within Customizer.
- Installs
- 1K+
- Rating
- 5.0(2)
- Downloads
- 11/day
Custom Javascript Inserter
Down in the last 7 days:185#17,763by Ray Waheed10 years ago
Simple and lightweight plugin for inserting custom javascript code for specific posts or pages.
- Installs
- 80+
- Rating
- 5.0(1)
- Downloads
- 0/day

WP Add Custom CSS and JS
Down in the last 7 days:7#28,221by D3 LOGICS5 months ago
Add unlimited custom CSS and custom JavaScript to WordPress from the admin panel, with a live code editor, autocomplete, and minified output.
- Installs
- 20+
- Rating
- 5.0(1)
- Downloads
- 0/day