Suggestion on rebuilding images with cleanup

[hollisterca]

When uploading a new image it creates lots of images. see attachment.
Any change your plugin can figure out which ones are still needed and suggest to delete the others (cleanup)?

[RistoNiinemets]

WordPress only "knows" of the images (and according sizes) that are defined. For example, if you change dimensions of some defined image size, then WordPress is unaware of the last image size and thereof files. Basically it means it's a problem throughout WordPress' handling of media images and sizes.

I understand cleanup (delete image sizes that are not defined) would be awesome, but I have to think about doing so without any risk of removing images that are in use or handled some other way (some plugins might be using images incorrectly). Thanks for the idea, this could be really awesome feature.