Do you need to use the same images on different network sites? If so, then this is the plugin you need.
WordPress Multisite Shared Media does just what it says: makes the uploaded media available across the network. It’s perfect for multilingual networks, and yes – it works for featured images and WooCommerce product image galleries.
For complete demo – 3 mins – Click on Video Preview-button above!
Automatic background synchronization of media files between selected network sites
Automatic cleanup of deleted media files across the network (opt-in feature)
Synchronize all existing media from selected source site to selected target site
Each site uses the same file on disk -> reducing disk space usage
Each site delivers the file from its own domain/path
Technical: Translation ready
Technical: Filter API to prevent certain media items from replicating