How to remove an image background on a Mac
Built in: in Preview, choose Tools → Remove Background (macOS 14 and later).
With Garlic
- Drag the photo and hold ⇧ Shift.
- Drop on Cut out (page two — the More clove turns the garlic).
- A transparent PNG appears beside the original.
To put it on a colour or gradient afterwards, use ⌘ Tools → Background, with a live preview.