Delete books or audiobooks from your Mac in Books
When you remove or delete a book, audiobook, or PDF from your library, it’s no longer stored on your Mac.
In the Books app
on your Mac, click All (or another collection) in the sidebar.If the item you want to delete or remove is part of a series, open the series.
Click the More button
, click Remove, then choose an option. Options may include:Remove from Collection: Remove the item from the currently selected collection.
Remove from Want to Read: Remove the item from the Want to Read collection.
Remove Download: If you’re signed in with your Apple ID, you can remove downloads from your library on Mac. The book, audiobook, or PDF may still be visible.
Note: Items you purchased from the Book Store or Audiobook Store are still stored in iCloud, even if you remove them from your Mac. The item appears in your library with an iCloud status icon
. You can download purchased books and audiobooks again.Hide Book: If you’re signed in with your Apple ID, you can hide a purchased item so it never appears in your library on any device. See Hide and unhide purchased books and audiobooks.
Remove Everywhere: If you’re signed in with your Apple ID, you can delete samples and unpurchased books from your Want to Read Section on all your iCloud devices and from your library on Mac. The book, audiobook, or PDF is no longer visible.
Delete: If you’re not signed in with your Apple ID, you can delete downloads from your library on Mac. The book, audiobook, or PDF is no longer visible.
You can choose whether to automatically remove downloaded books, audiobooks, or PDFs when you finish them. Click a collection under Library in the sidebar, click the More button 
in the upper-right corner, choose Remove Downloads, then choose Automatically When Finished or Manually.