tzangms

This plugin is originally written for blow.media, it will find the right post from various URL pattern. Especially permalink starts with <code>/%post_id%-%postname%/</code> format.
Allows patterns below
<ol>
<li>/%post_id%-any characters/</li>
<li>/%post_id%/</li>
<li>/%postname%/</li>
</ol>
This plugin searches for post_id and post slug in url, if the post is found, this plugin will redirect visitor to the latest permalink of post, so you can change your permalink structure as you wish without worrying about the missing link problem.

Blow Link

Find the right post from various URL pattern. Especially permalink starts with post_id.

ProThoughts.com

Simple redirect WordPress plugin, all 404 error pages are redirected to homepage. Google may lower PageRank of site if there are 404 error pages(Page not found), this plugin will fix that issue and help to improve your sites ranking.

Blow Link vs Redirect 404 Error Page to Homepage