Grégory Viguier

<p>With this plugin, administrators can change the default author base in the registered users profile url, and the author slug of each user.<br />
Changing an author slug is a good thing for security (if your login is “This Is Me”, your slug will be “this-is-me”, a bit easy to guess).<br />
The plugin adds 2 fields for this purpose, one in permalinks settings, the other in a user profile.</p>
<ul>
<li>Default: <em>example.com/author_base/author_nicename/</em></li>
<li>Customized: <em>example.com/jedi/obiwan/</em></li>
</ul>
<h4>How to edit the slugs</h4>
<ul>
<li>Go to <em>Settings</em> > <em>Permalinks</em> to edit the author base: “author” => “jedi”</li>
<li>Go to <em>Users</em> > <em>“Any user profile”</em> to edit the user slug: “agent-smith” => “obiwan”</li>
</ul>
<h4>Translations</h4>
<ul>
<li>English</li>
<li>French</li>
<li>German by <a href="https://wordpress.org/support/profile/carny88" rel="ugc">Carny88</a></li>
<li>Spanish by <a href="https://wordpress.org/support/profile/oliverbar" rel="ugc">Oliver</a></li>
</ul>
<h4>Multisite</h4>
<ul>
<li>The plugin is ready for Multisite.</li>
</ul>


SF Author Url Control

Allows administrators or capable users to change the users profile url.

texttheater

<p>NOTE: recent WordPress versions already properly transliterate umlauts if the<br />
site language is German. In that case, German Slugs is no longer needed.</p>
<p>While creating a post or page, WordPress automatically suggests a permalink. If<br />
your permalink structure contains the %postname% tag, then the title of your<br />
post or page will be used, simplified by conversion to lowercase, replacing<br />
spaces with hyphens, removing certain punctuation characters and removing<br />
diacritics from latin letters.</p>
<p>Thus, by default, ä is replaced with a, ö with o, ü with u and ß with s (similar<br />
for capital letters). For German, the conventional transliteration is ä to ae, ö<br />
to oe, ü to ue and ß to ss (sometimes sz in Austria, this is not yet supported).<br />
This plugin makes your WordPress apply the conventional transliteration.</p>
<p>I wrote this plugin because manually correcting WordPress’s suggestions is a<br />
considerable hassle, especially if you decide to change the title afterwards.</p>
<h3>Support</h3>
<p>If you have questions or suggestions, contact me at poststelle ät texttheater döt<br />
net.</p>


German Slugs

German Slugs properly transliterates umlauts and the letter ß appearing in titles for slugs (i.e. for pretty permalinks).

SF Author Url Control vs German Slugs