“404”

Easily build Themer layouts for your archives, posts, 404 pages and more!

Enterprise-grade WordPress 404 management plugin — async logging, multi-stage rerouting (Exact → Regex → Fuzzy → AI), and GDPR-compliant privacy-by-design.

Nerdy SEO is a lightweight but powerful WordPress plugin for tackling search engine optimization on websites. Easily manage titles, metas, image alt attributes, 404s, redirects, schema data, and more. Includes tool to…

WordPress plugin that checks for files in dropbox accounts, on the web server, and in a list of aliases before returning a 404.

Wordpress plugin to avoid 404 error after permalink update/link change

Free WordPress plugin: keep old links working with redirects, a 404 log and a check of your old URLs before a move (GPL). By PN Scripts.

See and control every outgoing connection of your WordPress plugins and themes: log with timing, block ads and notices, cache licenses, fast 404, WP-Cron control.

Lean, full-featured WordPress SEO plugin: titles, meta, JSON-LD schema, XML sitemaps, redirects, 404 monitor, IndexNow and live content analysis. No ads, upsells or tracking.

Adk Redirects is a streamlined WordPress plugin engineered to provide website administrators with robust control over URL redirection.

Lightweight WP internal link checker. Detects 404 broken links via Ajax to minimize server load. / Ajaxを利用した軽量な内部リンクチェッカー。サーバーへの負荷を抑えつつ、投稿・固定ページ内のリンク切れを高速に検知。

A minimal SEO plugin: indexation controls, page meta, sitemaps, redirects, a 404 monitor, and schema.

wordpress plugin that sends an e-mail when a 404 error occurs

A WordPress plugin that blocks 404 scanners at the Cloudflare edge using IP Access Rules. Works on every Cloudflare plan including Free; authenticates with a scoped API token kept in wp-config.php.

Lightweight redirect manager for WordPress. 301/302 redirects, slug-change detection, 404 monitor, redirect chain detection, wildcard support.

A simple yet effective redirect manager plugin for WordPress

Serves a cached 404 page to avoid excessive resource usage when serving dynamic 404 pages

A WordPress plugin that blocks 404 scanners at the Cloudflare edge using IP Access Rules. Works on every Cloudflare plan including Free; authenticates with a scoped API token kept in wp-config.php.

WordPress plugin to generate a random 404 page

SEOVela - a free, open-source WordPress SEO plugin with modular architecture. Enable only what you need: meta tags, XML sitemaps, JSON-LD schema, redirects, 404 monitor, internal links, image SEO, AI optimization, Google…

Comprehensive SEO plugin for WordPress. Meta tags, JSON-LD schema, sitemaps, redirects, 404 monitoring, image optimization, and more.

Spezifisches Plugin für Lieblingsquartiere, um 301 Redirects in geänderter Medienstruktur zu gewährleisten

Kashiwazaki SEO Link Doctor scans all internal and external links on your WordPress site, identifies broken links and errors using lightweight HEAD requests, and provides an interactive preview to locate problematic links…

aGo Monitor: lightweight WordPress health monitor (SSL, DB, disk, cron, 404)

Fixes https://core.trac.wordpress.org/ticket/51117

Redirects old date-based article URLs that no longer exist, helping preserve backlink/social traffic instead of sending visitors to a 404.

A plugin used to scan all pages and posts of a WordPress website, to find broken links.

Fix localized page 404 errors caused by Bogo and category URLs without a category base.

The only WordPress 404/redirect tool that understands Ecwid's embedded store URLs. Companion plugin for the Redirect & 404 Manager Ecwid app.

Allows editors and admins to set specific redirection rules for missing posts of each post type to a relative URL or the post type's archive page. Use case: a site which produces…