Stephanie Leary

This plugin applies all content filters to posts and comments and saves them back to the database. This is useful if you have been using Textile or Markdown (for example) and you want to switch to plain HTML.
<h3>Notes</h3>
USE THIS PLUGIN WITH CAUTION. If the results are not what you want, the damage will be irreparable unless you take the following precautions.
You should back up your database first — and be sure that you know how to restore from the backup!
If you are have plugins that allow you to use short codes — e.g. [thing] — you should deactivate them before running this conversion. Otherwise, that markup too will be converted to its HTML equivalent. (The built-in WordPress [gallery] tag should be fine.)
Once your conversion is complete, you should deactivate this plugin and reactivate your short code plugins.

Mass Format Conversion

Applies all content filters to posts and comments and saves them back to the database.

jeffrey-wp

Adds the ability to use categories in the WordPress Media Library. When activated a dropdown of categories will show up in the media library. 
You can change / add / remove the category of multiple items at once with bulk actions. 
There is even an option to filter on categories when using the gallery shortcode.
<h4>Features WordPress Media Library Categories</h4>
<ul>
<li>add / edit / remove categories from media items</li>
<li>change the category of multiple items at once with bulk actions</li>
<li>category options & management in the Media Library</li>
<li>filter on categories in the media library</li>
<li>filter on categories in the gallery shortcode</li>
<li>taxonomy filter</li>
<li>support for WordPress 4.0 – 6.9</li>
</ul>
<blockquote>
Try Premium version – 100% money back guarantee 
 WordPress Media Library Categories Premium adds the option to filter on categories when inserting media into a post or page. 
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</blockquote>

Media Library Categories

When edition a page in classic or new block system you never see a preview , it's always no items found.


On the visitor site their is no issue (for now)

BUG? in editor you always see no items found

Adds the ability to use categories in the media library.

Mass Format Conversion vs Media Library Categories