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I'm working on a site which has a media library that is now 7GB - and I really want to clear out all the unused images.

I've tried using the Media Cleaner Plugin: https://wordpress.org/plugins/media-cleaner/ But this seems to clear out images that I am using - this seems to be because my whole site is built with Advanced Custom Fields.

Does anyone have any suggestions on how I could delete images that aren't being used?

Thanks.

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I think you have already discovered the problem with a plugin approach. They will look for unlinked media (images not associated with a post) and remove those files. As you have said, you are using custom fields and you may also have uploaded images inside your post content.

Sadly the only option I can think of is to use a find command to get a list of all of your wp-content/uploads and then reduce that list by removing all images in use. As a starting point, you could try the WP-CLI database search command.

You'd want to allow for the different generated image sizes given that a thumbnail or medium image may be used, but you'd want to keep the original + all scaled variants.

It goes without saying that you should have a full backup of your database and files before running anything like this!

I'd be interested if someone can provide a more elegant and robust solution, but this is probably how I'd approach the problem.

  • Thanks Alexander! I'll have a think about doing something like that. Wish there was a more elegant solution. – Meg Towler Apr 25 at 14:31

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