Tidy Maccom.apple.idleassetsd holds the Aerial wallpaper and screen saver videos macOS downloads, such as landscapes and cityscapes. Each video can be hundreds of megabytes, so the folder can reach tens of gigabytes. Removing downloaded aerials is safe; macOS downloads them again only if you choose them.
Location: /Library/Application Support/com.apple.idleassetsd/Customer
What’s inside
- Downloaded Aerial wallpaper and screen saver videos (.mov)
- Thumbnails and a catalogue of available aerials
Remove downloaded aerials the Apple way
Open System Settings › Wallpaper (or Screen Saver), hover over a downloaded aerial and remove its download, or switch to a still wallpaper so macOS stops downloading new ones.
Or remove the videos in Finder
The folder is in the system Library, so you need an administrator password. Open /Library/Application Support/com.apple.idleassetsd/Customer and move the large .mov files in its subfolders to the Trash. Keep the folders themselves.
Tidy Mac won’t delete files in system folders; Space Map shows how big it is.
Find every folder like this on your Mac
Tidy Mac’s Space Map shows every big folder at its real size, and Apps › Leftovers finds folders left by apps you already deleted.
Frequently asked questions
Can I delete com.apple.idleassetsd?
Your choice: You downloaded this on purpose. Remove it if you don’t use it; you can download it again. com.apple.idleassetsd holds the Aerial wallpaper and screen saver videos macOS downloads, such as landscapes and cityscapes. Each video can be hundreds of megabytes, so the folder can reach tens of gigabytes. Removing downloaded aerials is safe; macOS downloads them again only if you choose them.
Where is com.apple.idleassetsd on my Mac?
/Library/Application Support/com.apple.idleassetsd/Customer. In Finder choose Go › Go to Folder and paste the path.
How big does com.apple.idleassetsd get?
Usually 1–60 GB.