Glossary · Printing & files
What is a full-wrap book cover?
Definition
Full-wrap cover: A full-wrap cover is a single print file containing the back cover, spine and front cover side by side, plus bleed on all edges.
Print books need a different cover file from eBooks. An eBook cover is just the front. A print cover is a full wrap: one wide image laid out as back cover, spine and front cover, left to right, with bleed around the outside. The printer prints it on one sheet and folds it around the book block.
Its size follows a simple formula. Width = bleed + back cover width + spine width + front cover width + bleed. Height = bleed + trim height + bleed. With the standard 0.125" bleed, a 6" × 9" paperback with a 0.75" spine needs a cover file 12.75" × 9.25". Because the spine depends on page count and paper, you cannot finalise the cover until the interior is final.
The back cover usually carries the blurb, an author photo or short bio, and a barcode area for the ISBN. Many print-on-demand platforms can add the barcode for you in a fixed position, so leave that area clear; check the platform's current cover guidelines for the exact size and placement.
Keep text and important artwork inside the safe zone, away from the trim lines and the spine folds. Upload the cover as a print-quality PDF at the exact dimensions the platform calculates — most will provide a template for your trim and page count.