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Best not found plugins for WordPress

The most popular not found plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Smart Custom 404 Error Page leads with 100K+ active installs, ahead of Custom 404 Error Page (1K+) and Post Category Prev-Next Link Fix (1K+). All 7 plugins tagged “not found” 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 7 not found plugins

  1. 1.
    Smart Custom 404 Error Page

    The most installed not found plugin, with 100K+ active installs. Rated 4.9 from 1,198 reviews, updated 5 months ago.

  2. 2.
    Custom 404 Error Page

    1K+ active installs. Rated 4.1 from 9 reviews, last updated 1 year ago. Tested only up to WordPress 6.8.12.

  3. 3.
    Post Category Prev-Next Link Fix

    1K+ active installs. Only 4 reviews so far, last updated 1 year ago. Tested only up to WordPress 6.7.11.

  4. 4.
    Page as 404

    40+ active installs. Rated 5.0 from 5 reviews, updated 1 month ago.

  5. 5.
    Fixora 404 Redirect Homepage

    Fewer than 10 active installs. No reviews yet, updated 3 weeks ago.

  6. 6.
    Easy Custom 404 Page

    Fewer than 10 active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.7.11.

  7. 7.
    PF404 for PetFinder

    Fewer than 10 active installs. No reviews yet, last updated 9 years ago. Tested only up to WordPress 4.8.34.

All 7 plugins tagged “not found”