Upperdog

Emil Gustafsson

<p>This plugin automatically converts language accent characters in filenames when uploading to the media library. Characters are converted into browser and server friendly, non-accent characters.</p>
<h3>Features</h3>
<ul>
<li>Converts accent characters to non-accent, latin equivalents in Swedish, Danish, German, and more.</li>
<li>Removes special characters like exclamation marks, periods, hashtags, and more.</li>
<li>Lets you choose if you want to convert only image files, or all file types.</li>
<li>Makes site and server migrations easier thanks to non-accent character filenames.</li>
<li>Provides filter hook for developers who want to specify which file types to convert.</li>
</ul>
<h3>Examples</h3>
<ul>
<li>Räksmörgås.jpg <span aria-hidden="true" class="wp-exclude-emoji">→</span> raksmorgas.jpg</li>
<li>Æblegrød_FTW!.gif <span aria-hidden="true" class="wp-exclude-emoji">→</span> aeblegrod-ftw.gif</li>
<li>Château de Ferrières.png <span aria-hidden="true" class="wp-exclude-emoji">→</span> chateau-de-ferrieres.png</li>
</ul>
<h3>Worth noting</h3>
<p>The plugin only converts filenames when the files are being uploaded. It can not convert existing files.</p>
<h3>Filter for developers</h3>
<p>This filter provides developers a way to specify which file types the plugin should convert. This filter overrides the plugin settings on the media settings page. For a complete list of mime types, see <a href="http://en.wikipedia.org/wiki/Internet_media_type" rel="nofollow ugc">Wikipedia</a>.</p>
<p>The following example will convert PDF, JPEG and PNG files only:</p>
<pre><code>function my_clean_image_filenames_mime_types() {
    $mime_types = array(
        'application/pdf',
        'image/jpeg',
        'image/png',
    );
    return $mime_types;
}
add_filter( 'clean_image_filenames_mime_types', 'my_clean_image_filenames_mime_types' );
</code></pre>


Clean Image Filenames

Using it happily on many websites without any issue.

Does what it says


Works like indicated. Simple and efficient


Works as expected

This plugin automatically converts language accent characters to non-accent characters in filenames when uploading to the media library.

Teemu Suoranta

<p>Converts Cyrillic, Georgian, Arabic and Chinese characters in post, term slugs and media file names to Latin characters.</p>
<p>This plugins uses parts from following plugins:</p>
<ul>
<li><a href="https://wordpress.org/plugins/arabic-to-lat/" rel="ugc">Arabic-to-latino</a></li>
<li><a href="https://wordpress.org/plugins/cyr3lat/" rel="ugc">Cyr to Lat enhanced</a></li>
<li><a href="https://wordpress.org/plugins/so-pinyin-slugs/" rel="ugc">Pinyin Slugs</a></li>
</ul>
<h4>The problem</h4>
<p>WordPress cannot sanitize all languages correctly which leaves pretty permalink with bare post ID. There are a few separate plugins to handle sanitazing but they won’t generally play along nicley and end up often removing parts from other languages.</p>
<h4>The solution</h4>
<p>This plugins combines the few working slug sanitazing plugins so that they will work together.</p>
<p>If you need only one of above plugins, you can (and probably should) use them instead of this. If you are in need of multiple of these plugins, this is the conflict-free combination for you.</p>
<h4>What this plugin sanitizes?</h4>
<ul>
<li>Post slug</li>
<li>Term slug</li>
<li>Filename</li>
</ul>
<p>These are sanitized with WordPress’s filter and done in post save etc.</p>
<p><strong>Notice:</strong> There is no bulk sanitizing option right now. If you are in need of it, some of the plugins above have their own solutions so adding the feature here wouldn’t be such a big hassle. Send a PR!</p>
<h4>What about language X?</h4>
<p>Send PR to add other languages to the mix.</p>


Aucor URL Sanitizer

Converts Cyrillic, Georgian, Arabic and Chinese characters in post, term slugs and media file names to Latin characters.

Clean Image Filenames vs Aucor URL Sanitizer