Prevents WordPress from delivering full Page-Not-Found errors when the browser is not expecting a full HTML page. Saves bandwidth and improves perform …
As of April 2026, Fast 404 is a WordPress 404 plugin with 50 active installations and a 0/5 rating0. It has been downloaded 6.9K+ times in total. Requires WordPress 3.9.2+ and PHP 7.1+. Available on WordPress.org since 2020. Last updated 2 years ago — may have compatibility concerns. Top alternative: Redirection.
Fast 404 is a low foot-print plugin that quickly inspects an incoming HTTP request, and terminates the request as soon as possible if the request is for a non-existing resource. If the browser is expecting an HTML page (indicated by the Accept HTTP header), this plugin will not intercept it. For all other requests, this plugin will terminate it immediately, saving server resources and bandwidth.
When a user browser requests a resource (such as a jpg image, or a .woff2 font file), the web server sends this resource if it is available in the requested location. If the file does not exist, the request is forwarded to WordPress to handle. Unless you are using a plugin that dynamically generates these files, these file-not-found requests trigger a full WordPress Page-Not-Found error page. This…
| WordPress | 3.9.2+ requiredTested up to 6.3.8 |
| PHP | 7.1+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.