Free KDP cover calculator
From finished draft to publish-ready package
Your book is written. Now make it shippable.
Good book publishing software starts with the file you actually plan to upload. Find structural, EPUB, cover, and metadata risks before KDP does—then export one version-locked release package.
- No card for free checks
- Browser-first inspection
- 60-day re-export window
Private by default
Drop in the file you plan to publish
Choose a DOCX or EPUB. This first check runs in your browser; your manuscript is not uploaded.
Free publishing tools
Start with the exact file or error in front of you.
Each tool answers one release question and links to the next relevant check. No generic AI writing detour and no card before you see a result.
Free DOCX preflight
KDP book formatter preflight for your Word manuscript.
Open free tool →Private EPUB validator online
EPUB validator online for the file you plan to publish.
Open free tool →Free KDP error decoder
Turn a KDP failed manuscript upload into the next fix.
Open free tool →Free book formatting preview
See three readable sample pages before formatting the whole book.
Open free tool →The expensive part is the last mile
Seven files and five tools still do not prove your book is ready.
A polished cover can have the wrong spine. A valid-looking EPUB can have a broken reading order. A clean Word file can hide comments, tracked changes, and weak chapter structure.
Upload rejection
Translate the platform message into the exact file, page, margin, or metadata change to make next.
Version drift
Keep manuscript, cover, metadata, store copy, and sample pages tied to one approved release.
Tool switching
Stop moving one title through a formatter, validator, keyword sheet, bio writer, and launch checklist.
A release workflow, not another blank page
See the problem before you pay for the fix.
Check
Calculate or inspect your own cover, DOCX, EPUB, or rejection message for free.
Lock
Choose the manuscript version, trim, audience, and publishing target that belong together.
Release
Download checked files, store copy, reader sample, and launch materials as one package.
One book release pass
Everything tied to the version you approve.
The $39 pass is for text-led books with a finished manuscript. It replaces a pile of disconnected final-mile subscriptions.
- EPUB and print-ready interior PDF
- Full-wrap cover dimensions and export check
- Metadata consistency report
- Amazon description, keyword and category candidates
- Author bio, sample page, and social launch assets
- Re-export the same title for 60 days
Simple pricing with an honest boundary
Book publishing software priced by release, not model credits.
Free checks stay useful. Upgrade when you need repaired exports, version history, reader capture, or client collaboration.
Free preflight
$0no card
Find the next concrete problem before committing.
- Cover and spine calculator
- DOCX structure scan
- EPUB preflight
- Rejection decoder
- Three-page proof
Author Studio
$169per year
For an author releasing a backlist or connected series.
- Five active books
- Series templates
- Version history
- Reader capture pages
- All release-pass outputs
Publisher Studio
$399per year
For formatters, editors, book coaches, and small publishers.
- Twenty active books
- Client workspaces
- White-label reports
- Team approval
- Reusable release checklists
Growth that travels with the book
Useful sharing, without cash commissions.
A book can bring its own next reader, collaborator, and author referral. The mechanism stays inside the publishing workflow instead of depending on affiliate payouts.
- 01
A shareable sample page with a quiet ShipMyBook credit
- 02
A back-of-book bonus or worksheet link that brings readers back
- 03
Private annotation invites for editors, designers, and co-authors
- 04
One book slot for both sides after a referred customer actually pays
ShipMyBook
Bring the manuscript. Leave with a release.
Start free with the file you already have. You will see what needs attention before any checkout appears.