Manuscript Formatting
Book Trim Size: How to Choose Before You Format
Choose your book trim size with confidence: KDP's page count limits by ink and paper, the large trim cost boundary, and what locks after you publish.
Amazon KDP guides
How Kindle Direct Publishing works in practice: what you earn per copy, what printing costs, how to price your book and how to get files through review the first time.
Book Cover Design
KDP Spine Width Calculator, Formula and Cover Size
Use the KDP spine width calculator formula to get your paperback spine, full cover size and bleed right, and learn when KDP allows text on the spine.
Amazon KDP
KDP Paperback Royalty Calculation: What You Earn Per Copy
KDP paperback royalty calculation, explained: the 50% and 60% price thresholds, printing costs by page count and trim, and royalties at real prices.