John Godley

Enhances the WordPress media library by allowing you to rename the underlying media files. Any change to a media item’s title will result in the media filename also being changed.
See the screenshot for more details of where to rename media files.
Note that all thumbnails will also be renamed. If you are using a caching plugin, such as WP Super Cache, then you will need to clear your cache so that any references are updated. This plugin does not update existing direct links to files (links inside a WordPress gallery will change).

Rename Media

Rename underlying media files from the WordPress media management interface

neoslab

MD5 Media Renamer will automatically rename and convert to lower case your media file during the upload process using PHP time() stamp as prefix and the file name encrypted in MD5() as suffix in order to keep your upload folder clean and organized. More information can be found at : <a href="http://www.natexim.com/wp-rename-file-during-upload/" rel="nofollow ugc">WP Rename file during upload</a>.
** Supported files Image extension **
<ul>
<li>.jpg</li>
<li>.jpeg</li>
<li>.png</li>
<li>.gif</li>
</ul>
** Supported files Document extension **
<ul>
<li>.pdf</li>
<li>.doc</li>
<li>.docx</li>
<li>.ppt </li>
<li>.pptx</li>
<li>.pps</li>
<li>.ppsx</li>
<li>.odt</li>
<li>.xls</li>
<li>.xlsx</li>
</ul>
** Supported files Audio extension **
<ul>
<li>.mp3</li>
<li>.m4a</li>
<li>.ogg</li>
<li>.wav</li>
</ul>
** Supported files Video extension **
<ul>
<li>.mp4</li>
<li>.m4v</li>
<li>.mov</li>
<li>.wmv</li>
<li>.avi</li>
<li>.mpg</li>
<li>.ogv</li>
<li>.3gp</li>
<li>.3g2</li>
</ul>

MD5 Media Renamer

Sanitize and rename automatically media files during upload using PHP time() as prefix and the file name encrypted in MD5() as suffix.

Rename Media vs MD5 Media Renamer