CHR Designer

This plugin will help when you add images with special characters, after activated it will remove all special characters of new images added.
<h4>Language:</h4>
<ul>
<li>English (Default)</li>
</ul>
<h4>Look for all my plugins</h4>
Sign in for see the demos, all my plugins…
Front-end: http://www.chrdesigner.com/demo/
Back-end: http://www.chrdesigner.com/demo/login/
Username: demo – Password: demo
<h3>Localizations</h3>
<ul>
<li>English</li>
</ul>
<h3>License</h3>
Remove Special Characters is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Remove Special Characters is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with CodexFree. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

Remove Special Characters

This plugin will help when you add images with special characters, after activated it will remove all special characters of new images added.

OneAll

Claude

This plugin enables usernames containing special characters (russian, cyrillic, arabic …) on your WordPress blog.
Per default WordPress does not allow to use special characters in usernames. Non-latin characters are silently filtered out and your users cannot create accounts containing cyrillic (russian) or arabic letters. This plugin is the solution to this problem.
The plugin works for users that are added by the administrator, for users that register with their username/password and for users that register using our <a href="https://wordpress.org/plugins/oa-social-login/" rel="ugc">Social Login</a> plugin for WordPress.
Please Note 
Special characters are encoded in the database and take a bit more space than regular characters.
If users having special characters in their usernames still cannot register after having installed the plugin then you probably have to increase the length of the column <code>user_nicename</code> in the table <code>wp_users</code> in your database.
Example:
<pre>
ALTER TABLE `wp_users` CHANGE `user_nicename` `user_nicename` VARCHAR(255) NOT NULL DEFAULT '';
</pre>
Available Charsets 
You can enable/disable each charset individually in the Settings \ WSCU Settings page in your WordPress admin area.
<ul>
<li>Arabic</li>
<li>Armenian</li>
<li>Bengali</li>
<li>Bopomofo</li>
<li>Braille</li>
<li>Buhid</li>
<li>Canadian Aboriginal</li>
<li>Cherokee</li>
<li>Cyrillic</li>
<li>Devanagari</li>
<li>Ethiopic</li>
<li>Georgian</li>
<li>Greek</li>
<li>Gujarati</li>
<li>Gurmukhi</li>
<li>Han</li>
<li>Hangul</li>
<li>Hanunoo</li>
<li>Hebrew</li>
<li>Hiragana</li>
<li>Kannada</li>
<li>Katakana</li>
<li>Khmer</li>
<li>Lao</li>
<li>Latin</li>
<li>Limbu</li>
<li>Malayalam</li>
<li>Mongolian</li>
<li>Myanmar</li>
<li>Ogham</li>
<li>Oriya</li>
<li>Runic</li>
<li>Sinhala</li>
<li>Syriac</li>
<li>Tagalog</li>
<li>Tagbanwa</li>
<li>TaiLe</li>
<li>Tamil</li>
<li>Telugu</li>
<li>Thaana</li>
<li>Thai</li>
<li>Tibetan</li>
<li>Yi</li>
</ul>

WordPress Special Characters in Usernames

Enables usernames containing special characters (russian, cyrillic, arabic ...) on your Wordpress Blog.

Remove Special Characters vs WordPress Special Characters in Usernames