Sergey Biryukov

Allows to find all posts where a particular attachment (image, video, etc.) is used.
Adds a “Used In” column to the list view in Media Library, as well as to the attachment details modal.
Finds posts that use the image (including any of its intermediate sizes) in post content, or as a featured image. Works with custom post types too.
Inspired by a <a href="http://wptavern.com/the-problem-with-image-attachments-in-wordpress" rel="nofollow ugc">WP Tavern post</a> on image attachments.

Find Posts Using Attachment

Allows to find all posts where a particular attachment is used.

Alsvin Tech

By default, when you delete a post or page, any associated media files or attachments to that post do not get deleted. Keeping these orphan files to your server will eat up a lot of precious web space for no reason.
Using this plugin when you delete a post, any associated attachments will also get deleted automatically.
Before deleting any media file or attachment the plugin smartly checks that the attachment is not in use elsewhere, i.e. on any other post, page, or product.
Works with popular Page Builders:
<ul>
<li>Elementor</li>
<li>Thrive Architect</li>
<li>Divi Builder</li>
<li>Brizy</li>
<li>and many more…</li>
</ul>
Works with all popular plugins such as:
<ul>
<li>WooCommerce</li>
<li>Easy Digital Downloads</li>
<li>LearnDash</li>
<li>BuddyPress</li>
<li>MemberPress</li>
<li>Paid Memberships Pro</li>
<li>and many more…</li>
</ul>
Features:
<ul>
<li>No configuration required</li>
<li>Just activate and use</li>
<li>Save your precious server storage</li>
<li>Works automatically on post/page deletion</li>
</ul>

Delete Post with Attachments

A simple plugin to delete attached media files e.g. images/videos/documents, when the post is deleted. Supports Elementor, Divi Builder, Thrive Archit …

Find Posts Using Attachment vs Delete Post with Attachments