The following functions are available:
- Normalize
- The function accumulates all unique artwork items by type within an album and causes every track to have a copy of each accumulated item. Tracks without Album fields are ignored.
- Largest First
- The function makes the largest artwork item the default (first), for every track. The item is assigned a picture type of Cover (front).
- Delete all But Largest
- The artwork is normalized then all but the largest artwork item is deleted.