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Best defer js plugins for WordPress

The most popular defer js plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Page Speed Optimizer leads with 6K+ active installs, ahead of CSS JS Manager, Async JavaScript, Defer Render Blocking CSS (1K+) and A faster website! (aka defer.js) (200+). All 3 plugins tagged “Defer JS” 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 3 defer js plugins

  1. 1.
    Page Speed Optimizer

    The most installed defer js plugin, with 6K+ active installs. Rated 4.7 from 64 reviews, updated 1 week ago.

  2. 2.
    CSS JS Manager, Async JavaScript, Defer Render Blocking CSS

    1K+ active installs. Rated 4.8 from 90 reviews, updated 1 week ago.

  3. 3.
    A faster website! (aka defer.js)

    200+ active installs. Rated 4.9 from 45 reviews, last updated 1 year ago. Tested only up to WordPress 6.8.12.

All 3 plugins tagged “Defer JS”