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

Sazzad Hossain Sharkar

Unique uploaded media names by adding some extra random string.
By default, WordPress upload file name slugs at it are. Sometimes if any file name conflicts, WordPress adds extra suffix at the end of the slug name.
Example: <code>my-image.jpg</code> and if the file name is similar, <code>my-image-1.jpg</code> <code>my-image-2.jpg</code> and so on.
By installing this plugin, every uploaded media will have unique values as a suffix at the end of the uploaded media name. Default uploaded string value is 15 character and have zero possibility of file name confliction. <code>Uploaded file name + Unique String</code>
Example
<ul>
<li>my-image-475445-SIu7oQGW.jpg</li>
<li>my-image-311629-TFuNSyHH.jpg</li>
</ul>
Features
<ul>
<li>Adds unique suffix at the end of the uploaded file name. e.g.: my-image-<code>311629-W3dRonmw</code>.jpg</li>
<li>Generated strings are very unique and less possibility of confliction</li>
<li>Remove Accents <code>Convert to ASCII</code></li>
<li>Crypto Rand Secure with <code>openssl_random_pseudo_bytes</code></li>
<li>Added more extra switch conditions to use other string generator. (<code>Numeric</code>, <code>Alpha Numeric</code>, <code>No Zero Numeric</code>, <code>All String</code>, <code>Hexadecimal</code>, <code>Capital</code>, <code>Alpha</code> and <code>Distinct</code>). Just edit line number <code>75</code> and <code>76</code>.</li>
<li>converts unnecessary space, underscore and special characters to hyphen character.</li>
<li>Consumes very low memory</li>
<li>Single file <code>3.02KB</code></li>
<li>Open source license, modify and distribute with your own. <code>GPLv2 or later</code></li>
<li>Tested with <code>WordPress 5.2.1</code></li>
</ul>

Unique Uploaded Media Name

Although, most of the time I personally prefer to uploaded contents should have a unique string in order to identify them easily. I thought it would be great if I submit a plugin which may help others.

A very lightweight plugin which requires 3.02 Kilobytes of space.

Review from the plugin author

Unique uploaded media names by adding some extra random string

Rename Media vs Unique Uploaded Media Name