What is the difference between Kindle and other ebook trims?
The trim selector includes a Kindle ebook format and may also offer ebook proportions such as Kobo or Apple. These formats can have different width-to-height ratios, so text and artwork may need small position or size adjustments after switching.
Kindle is the main ebook version used by other Book Cover Zone features. Create and check that version first, then make additional ebook trims when a store or distributor requires different dimensions.