Upload your front artwork and your interior PDF. You get the complete print cover — back, spine and front in one file, what KDP calls a cover wrap — plus the Kindle cover and a report showing every measurement, with the spine read off your interior instead of typed in from memory.
The spine is a function of the page count, and the page count is not known until the interior is finished. So the usual sequence — commission the cover, then typeset the book — produces a cover built against an estimate. The book runs fourteen pages longer than expected and the spine is wrong.
Every other tool of this kind asks you to type the page count. We read it from the PDF you are going to upload to Amazon, which is the only number that turns out to be true.
Change the page count and watch the spine move. That is the whole problem in one control — and it is calculated free here, whether or not you buy anything.
You fix a typo. You add an acknowledgements page. The book runs two pages longer and the spine you just paid for is the wrong width — the same failure this whole service exists to prevent. Charging you again for it would be charging you for our own premise.
Come back within 29 days with your job number, the same cover artwork, and the corrected interior. We read the new page count off it, rebuild the cover around the new spine, and you pay nothing. You re-upload the artwork because we deleted our copy after seven days — that is the retention promise working, not an inconvenience we invented. How it works.
And if you publish more than once, save your setup — trim, paper, layout, type style, pen name — and the next book starts already configured. Save as many as you have pen names.
Your front artwork and your interior PDF. We check resolution, colour mode, page size and page count, and tell you exactly what is wrong before any payment screen appears.
Your artwork comes back typeset, ready to judge. Pick the one you like and the full cover builds in front of you — back, spine and front — so you see the finished thing before you decide.
$39, or one credit from a ten-pack. Card handled by Stripe; we never see it.
Four files in about ten seconds, and an email with the link. Your artwork is deleted from our servers after seven days, or sooner if you say so.
There is a guide for that — commissioning, premades, AI generation and doing it yourself, with the exact pixel specifications for every trim size and the licensing traps that catch authors after publication.