Image information editor - show only used images

Hi guys. The bulk editor of meta information is a great start. It is still difficult though when you have thousands of images, from which many are not used at all.
Is there a way to somehow hide images that are not being used?

I appreciate that there are many way how images can be embedded on the website. For example we us a gallery plugin (Justified Image Grid) that generates galleries based on a category that was created and assigned to pictures using another plugin... which makes the job of identifying used images much harder I guess.

Another alternative way I can imagine is to have some tool that would allow to browse the frontend of the website and then simply find the image in the library (I know you can see the images file name in the source and manually go look it up...).


Any tips/?