About kdpcover.pro
kdpcover.prois an independent precision tool for Amazon KDP paperback and case-laminate hardcover covers. It computes exact spine width, full-cover dimensions, bleed, and safe zones from your trim size, paper type, and page count — verified against Amazon’s official cover-template generator. Run it on the KDP cover calculator; this page covers how it works and the sources behind it.
Methodology
Every multiplier and formula was last reconciled against Amazon KDP’s official cover-template generator on . All math runs in your browser; nothing is uploaded. The full set of formulas lives in lib/kdp/calc.ts with full unit-test coverage.
Authoritative sources
- KDP Paperback Cover Creation
- KDP Hardcover Cover Creation
- KDP Trim Size, Bleed & Margins
- KDP Barcode Requirements
- KDP Print Options
- KDP Cover Calculator (template generator)
Common questions about spine width, bleed, trim sizes, and KDP rejections are answered on the KDP cover calculator itself, alongside the live tool.
Contact
Bugs, feature requests, or accuracy reports: hello@kdpcover.pro.