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Best inject plugins for WordPress

The most popular inject plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Header Code leads with 100+ active installs, ahead of Footer Code (30+) and Inject-O-Matic (20+). All 6 plugins tagged “inject” 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 6 inject plugins

  1. 1.
    Header Code

    The most installed inject plugin, with 100+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 6.6.11.

  2. 2.
    Footer Code

    30+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 6.6.11.

  3. 3.
    Inject-O-Matic

    20+ active installs. No reviews yet, last updated 11 years ago. Tested only up to WordPress 4.2.39.

  4. 4.
    QuickChat

    10+ active installs. Only 1 review so far, last updated 9 years ago. Tested only up to WordPress 4.6.30.

  5. 5.
    Lagden-in

    10+ active installs. Only 1 review so far, last updated 10 years ago. Tested only up to WordPress 4.6.30.

  6. 6.
    Nzymes

    Fewer than 10 active installs. No reviews yet, last updated 9 years ago. Tested only up to WordPress 4.7.39.

All 6 plugins tagged “inject”