Best 404 errors plugins for WordPress
The most popular 404 errors plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Security Safe leads with 600+ active installs, ahead of Proactive Site Advisor (fewer than 10). All 2 plugins tagged “404 errors” 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.
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Top 2 404 errors plugins
- 1.
Security SafeThe most installed 404 errors plugin, with 600+ active installs. Rated 5.0 from 13 reviews, updated 7 months ago. Tested only up to WordPress 6.9.11.
- 2.
Proactive Site AdvisorFewer than 10 active installs. Only 1 review so far, updated 2 weeks ago.
All 2 plugins tagged “404 errors”
Security Safe
Down in the last 7 days:11#8,117by Sovereign Stack, LLC8 months ago
This security plugin helps you quickly audit, harden, and secure your WordPress website.
- Installs
- 600+
- Rating
- 5.0(13)
- Downloads
- 11/day
Proactive Site Advisor
Up in the last 7 days:4,277#62,624by ZheynLab17 days ago
Get early warnings on traffic drops, 404 surges, and bot spikes. Privacy‑friendly anomaly detection that tells you when, why, and what to check next.
- Installs
- <10
- Rating
- 5.0(1)
- Downloads
- 5/day