Find Posts Using Attachment

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 WP Tavern post on image attachments.