Felix Arntz

<p>The plugin adds two taxonomies to the WordPress media library which are then available to categorize and tag your attachments. By default, these taxonomies, although sharing the same names and behavior, are separate from the default post taxonomies, but this can easily be changed if desired.</p>
<p>The plugin follows WordPress Core principles and offers a lightweight alternative to similar approaches which often tend to be incredibly flexible, but at the same time complicated and bloated. And if you have a little knowledge of code, you should be able to adjust the plugin exactly to your needs if the default configuration doesn’t satisfy you.</p>
<h4>Features</h4>
<ul>
<li>Adds categories and tags to the Media Library (independent from the regular post categories and tags)</li>
<li>Inserts filter dropdowns for attachment taxonomies into the media toolbar and media modal</li>
<li>Allows to pick taxonomy terms for attachments from within the Attachment Selection & Edit modals</li>
<li>Adds a setting for the default attachment category</li>
<li>Enhances the <code>[gallery]</code> shortcode so that images of a specific attachment taxonomy can be included automatically</li>
</ul>
<h4>Quality attributes</h4>
<ul>
<li>Lightweight plugin following WordPress Core principles</li>
<li>“Decisions, not Options”</li>
<li>Can easily be used as a must-use plugin</li>
<li>Provides a flexible API to add other attachment taxonomies or disable the existing ones for developers</li>
<li>Provides an easy-to-use <code>has_default</code> argument that can be used when registering an attachment taxonomy in order to automatically add a setting for the default taxonomy term</li>
</ul>


Attachment Taxonomies

Works perfect!

Now this is a piece of art!  No bloat, no hassle.  Well done Felix!

Piece of Art

This plugin adds categories and tags to the WordPress media library - lightweight and developer-friendly.

Freemius

vegacorp

Jose Vega

<p><strong>This plugin works with Gutenberg (new editor). It works with the classic editor and the gutenberg editor.</strong></p>
<p>Require users to select a taxonomy term when publishing posts. For example, require the selection of a category or tag.</p>
<h4>It works with</h4>
<ul>
<li>All taxonomies , including post categories , post tags , product categories, product tags, and custom taxonomies.</li>
<li>All post types , including posts, pages, WooCommerce Products, Events, etc.</li>
</ul>
<h4>Use cases</h4>
<ul>
<li>Force users to select a category when publishing posts</li>
<li>Force users to select a tag when publishing posts</li>
<li>Force users to select a custom taxonomy term when publishing posts</li>
<li>Force users to select a category when publishing WooCommerce Products</li>
<li>Force users to select a tag when publishing WooCommerce Products</li>
<li>Force users to select a category or tag when publishing Events</li>
<li>Force users to select any Taxonomy Term when publishing any custom post type</li>
</ul>
<p>This plugin is completely free.</p>


WP Required Taxonomies – Categories and Tags Mandatory

Great for making categories required , so users can´t publish without selecting a category.

Great

Force users to select a taxonomy term when publishing posts. For example, make category or tags required

Attachment Taxonomies vs WP Required Taxonomies – Categories and Tags Mandatory