tmatsuur

<p>When you assign multiple categories to a post, only one can show up in the permalink. This will be the lowest numbered category. If this plug-in is used, arbitrary categories can be applied to a permalink.</p>
<h4>Some features:</h4>
<ul>
<li>Arbitrary categories can be applied to a permalink.</li>
<li>If a parent category is specified, the child category can be given priority to and applied(optional).</li>
</ul>
<h4>Support</h4>
<ul>
<li>Japanese – https://elearn.jp/wpman/column/slightly-troublesome-permalink.html</li>
</ul>
<h4>Translators</h4>
<ul>
<li>Japanese(ja) – <a href="https://12net.jp/" rel="nofollow ugc">Takenori Matsuura</a></li>
</ul>
<p>You can send your own language pack to me.</p>
<p>Please contact to me.</p>
<ul>
<li>https://12net.jp/ (ja)</li>
<li>@tmatsuur on twitter.</li>
</ul>
<h4>Contributors</h4>
<ul>
<li><a href="https://12net.jp/" rel="nofollow ugc">Takenori Matsuura</a></li>
</ul>
<h3>Credits</h3>
<p>This plug-in is not guaranteed though the user of WordPress can freely use this plug-in free of charge regardless of the purpose.<br />
The author must acknowledge the thing that the operation guarantee and the support in this plug-in use are not done at all beforehand.</p>
<h3>Contact</h3>
<p>email to takenori.matsuura[at]gmail.com<br />
twitter @tmatsuur</p>


Slightly troublesome permalink

This plug-in controls the category in permalink. When the post belongs to two or more categories.

Frank Bueltge

Inpsyde GmbH

<p>When you change the permalink structure then this is a problem for bookmarks of users and also for search engines to link to your posts. This plugin uses the slug of the new url and search for a ID in the database of WordPress. If it finds a post according to the slug, the Plugin will redirect to the correct post and send a header message “moved permanently 301” to change the url on the index of search engines.</p>


Change Permalink Helper

Awesome!

It checks the Permalink and redirects to the new URL, if it doesn't exist. It sends the header message "moved permanently 301"

Slightly troublesome permalink vs Change Permalink Helper