Yes, SEO404 is free to use. It is available as a free plugin on WordPress.org.

How many websites use SEO404?

SEO404 has 70 active installations as tracked by WordPress.org.

What are the best SEO404 alternatives?

Popular alternatives to SEO404 include Redirection, Redirection, Quick Page/Post Redirect Plugin. You can compare them side-by-side on our comparison pages.

Does SEO404 work with the latest WordPress?

SEO404 has been tested up to WordPress 3.3.2. It requires WordPress 3.2+ and PHP false+.

PluginSift

SEO404

Name: SEO404
Author: larsstorm

SEO404 redirects to the Blog front page with a 301. No more 404 errors on Google/Bing/etc.

By larsstorm·301·Free

·70 active installs·Updated 13 years ago

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As of April 2026, SEO404 is a WordPress 301 plugin with 70 active installations and a 0/5 rating0. It has been downloaded 3.9K+ times in total. Requires WordPress 3.2+ and PHP false+. Available on WordPress.org since 2011. Last updated 13 years ago — may have compatibility concerns. Top alternative: Redirection.

0/5Rating

70active installs

3.9K+total downloads

15 yearssince 2011

Overview

Got an old domain? 404 errors all over? using WordPress?
Time to remove those 404 errors and recover your lost inbound links…

Using SEO404, a very lightweight plugin for WordPress, you can easily change all those 404 errors to 301 redirects for your blog frontpage.

Since 0.3 define the 301 redirect destination url.

We’ve used this technique to force redirects to the frontpage before. Though usually just included it in a wordpress theme. But why not have this as a plugin? So here is SEO404 WordPress plugin, ready for use.

Read full description on WordPress.org