Why Are There Added Blank Pages in My Printed Books?

The page count of the printed book may increase, depending on the printed signature.

There are times during the manufacturing processes of printing and binding where a book may need to have additional pages added, which you are not charged for. (Example: the stored file is 26 pages (not divisible by 4 or 6) and 2 pages are added when printing as four-page or 4 pages are added when printing as six-page).

Books files created with a trim size of 6.14” x 9.21” (234 x 156) and smaller will be printed in either six-page (three front/three back) or four-page (two front/two back) single sheet **signatures.

Books files created with a trim size larger than 6.14” x 9.21” (234 x 156) will be printed in four-page (two front/two back) single sheet **signatures.

*A signature is a group of pages that are printed on both sides of a single sheet of paper that once folded, trimmed, bound and cut, become a specific number of pages depending on the page size and the size of the press sheet.

Premium Color book interior files are processed with page counts divisible by 2 and printed with page counts divisible by 4.

**Lightning Source will automatically add blank pages when printing and binding a book, if necessary. If you want to ensure no blank pages are added during the manufacturing process (other than those required for the interior barcode), the book’s page count should be divisible by 12.