Does it support Offloaded Media (S3, Cloud Storage, ...) ?

Short answer Media Cleaner can't find files that exist only on S3 or another cloud storage and have no entry in your Media Library. It...

Why doesn't Site Health show less disk space after a cleanup?

WordPress doesn't measure folder sizes live. Tools → Site Health → Info → Directories and Sizes shows sizes that were saved earlier (the dirsize_cache transient),...

Is 1 license only for 1 website?

When buying the PRO version you can see how many licenses you will get. This refers to the number of active licenses you can have running...

Does it work with ... ?

Media Cleaner works by checking your post content and searching for any media that may be referenced there. So if your media is explicitly referenced...