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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.

Research this niche or see all plugins.

Top 5 custom javascript plugins

  1. 1.
    Custom CSS and JavaScript

    The 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. 2.
    TC Custom JavaScript

    10K+ active installs. Rated 5.0 from 8 reviews, last updated 3 years ago. Tested only up to WordPress 6.1.16.

  3. 3.
    Custom Header Footer Scripts for Customizer

    1K+ active installs. Only 2 reviews so far, last updated 3 years ago. Tested only up to WordPress 6.3.14.

  4. 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. 5.
    WP Add Custom CSS and JS

    20+ 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”