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Best defer javascript plugins for WordPress

The most popular defer javascript plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Flying Scripts leads with 30K+ active installs, ahead of A. Smith Speed Optimizer (fewer than 10) and Digify Speed Engine (fewer than 10). All 4 plugins tagged “defer 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 4 defer javascript plugins

  1. 1.
    Flying Scripts

    The most installed defer javascript plugin, with 30K+ active installs. Rated 5.0 from 38 reviews, updated 4 weeks ago.

  2. 2.
    A. Smith Speed Optimizer

    Fewer than 10 active installs. No reviews yet, updated 1 month ago.

  3. 3.
    Digify Speed Engine

    Fewer than 10 active installs. No reviews yet, updated 1 month ago.

  4. 4.
    Clicks Core Web Vitals Optimizer for WooCommerce

    Fewer than 10 active installs. No reviews yet, updated 2 months ago.

All 4 plugins tagged “defer javascript”