The Learning Zone
Practical design, formatting, and editorial guidance for authors and publishers bringing a book to print.
How to Calculate Spine Width for a KDP Paperback
Skip the manual math. KDP’s Cover Calculator builds your spine and cover template from your exact specs. Here’s how to use it and when to regenerate it.
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.
Why Is My Spine Text Off-Center or Missing on KDP?
KDP spine text off-center or missing? It’s almost always page count and timing, not your design file. Here’s the real fix.