Rebuild folder cover art for
every folder in your library
using the current thumbnail style.
Existing folder images will be deleted.
Every folder.png, folder.jpg,
folder.jpeg, folder.gif and
folder.webp inside it is removed and replaced —
including cover art you uploaded yourself.
This cannot be undone.
Your library root
keeps its own thumbnail — only the folders nested inside it
are rebuilt.
Pinned covers are kept: a folder with a pinned issue keeps using it.
On a large library this runs in the background and can take a while.