The Learning Zone

Practical design, formatting, and editorial guidance for authors and publishers bringing a book to print.

Daniel J. Middleton 7/17/26 Daniel J. Middleton 7/17/26

Why Did My Hardcover Jacket Wrap Come Back Misaligned?

Hardcover jacket wrap misaligned on IngramSpark or Lightning Source? It’s the same spine width math behind KDP spine text — here’s how to fix it.

Daniel J. Middleton 7/6/26 Daniel J. Middleton 7/6/26

KDP spine text off-center or missing? It’s almost always page count and timing, not your design file. Here’s the real fix.