Learn what belongs on a book back cover, how fiction and nonfiction blurbs differ, and how to build short, scannable copy without stuffing the panel.
Design a readable book back cover that fits the front and spine, uses a clear content hierarchy, and leaves room for barcodes and print safety.
Make a KDP full wrap cover from final book settings and existing front-cover art, then export one correctly sized paperback PDF for Previewer.
Use the KDP spine width formula with your final page count and paper type, see worked examples, and know when to recalculate before making the cover.
Compare KDP trim sizes for paperback and hardcover books, then choose the right Amazon book dimensions by genre, page count, format, and reading feel.
Before rebuilding your Canva cover, check KDP full cover size, 0.125 bleed, safe area, spine width, barcode space, and PDF export settings.