Context instead of errors
Every blocker explains the reason and the exact next step required.
THE BOOK PRODUCTION SYSTEM FOR AUTHORS
Don’t just write a book.
Make it ready for the world.
epubio connects writing, DOCX import, book design, EPUB validation, print preparation and publication handoff in one guided workspace.
Private build phase
✓No sales commission✓One-time BookPass✓German & English built in
epubio.THE QUIET PATHSLIVE
LIVE BOOK STATE01Manuscript✓02Metadata✓03Design✓04Cover✓
RELEASETWINThe current book statev1.8 · 94/100
OUTPUTS✓EPUB 3.3→Print PDF→KDP package
✓
QUALITY GATEKeine Blocker
SCROLL TO EXPLORE
DOCXImport with structure
EPUBCheckValidate technically
PRINTPrepare the book block
RELEASETWINControl every change
PUBLISHHandoff with confidence
ONE BOOK. TOO MANY DISCONNECTED TOOLS.
The hard part often starts after the writing.
Text editor, formatting, cover, metadata, validation tools, print files and store checklists usually live apart. That creates questions, outdated files and uncertainty exactly when a book should be ready.
One state instead of file chaos
Manuscript, design, cover and editions remain connected and traceable.
Guidance instead of jargon
epubio always shows the next useful step without taking creative decisions away.
EVERYTHING THAT TURNS TEXT INTO A BOOK
Professional book production. One calm system.
01WRITE
Write & structure
Chapters, focus mode, versions and a workspace designed to keep the text at the centre.
↗02IMPORT
Import DOCX intelligently
Documents are analysed, structured and presented clearly for review before import.
↗03DESIGN
Design the book
Typography, chapter structure, metadata, cover and book architecture are prepared together.
↗04VERIFY
Understand quality
EPUBCheck, content checks, accessibility and concrete correction paths instead of cryptic messages.
↗05PRINT
Prepare print
Page numbers, book block, format, spine width, cover PDF and print-related checks.
↗06PUBLISH
Handoff publication
Guided packages for KDP, Apple Books, Google Play and printers — without storing store passwords.
↗THE GUIDED PRODUCTION PATH
From the first thought to the right edition.
Begin
Start writing, paste text or import a DOCX file with full control.
●Develop
Complete chapters, book details, genre, structure and design step by step.
○Verify
Meet editorial and technical requirements with clear, actionable guidance.
○Build
Create valid EPUB, print and destination packages from the same book state.
○Publish
Handoff to stores or printers with control and document the publication state.
○EPUBIO RELEASETWIN
Your book changes. ReleaseTwin knows which edition is affected.
If the cover, title, a chapter or print profile changes after export, ReleaseTwin marks outdated editions and approvals. You always know what is truly current and ready to publish.
Discover ReleaseTwin→↻
Cover was replacedSHA-256 · 9d2…a71
1Rebuild EPUB→
2Update KDP package→
3Recheck print cover→
THE EPUBIO DIFFERENCE
Not just an export. Responsibility across the full process.
Typical single-purpose toolepubio.
Write or import✓✓
EPUB and print from one book state–✓
Reason + next step for blockers–✓
Impact of later changes–✓
Destination packages with manifest and checksums–✓
Guided store and print handoff–✓
ONE MODEL. ONE CLEAR PRICE.
BookPass instead of subscription clutter.
One BookPass guides a book project through writing, production and publication. No automatic renewal and no share of your book sales.
12months of full access90days of subsequent read-only access0No automatic renewal
epubio BookPassDesigned for one complete book project
€119one-time, VAT included
Included in BookPass✓Complete author workspace✓EPUB, print and destination outputs✓ReleaseTwin and version control✓Quality checks with concrete solutions✓Guided publication preparation
Sign in with an existing account→FAQ
Questions worth answering before chapter one.
01Can I import my existing Word manuscript?＋
Yes. DOCX files are analysed first. epubio shows detected chapters, headings and notable passages before content is imported.
02Does epubio create a technically valid EPUB?＋
epubio creates EPUB editions and validates them with EPUBCheck. Technical blockers include their cause and the required next step.
03Can I prepare a print edition as well?＋
Yes. The production path covers book block, page numbers, format, spine width, cover PDF and print-related checks.
04Does epubio publish automatically on Amazon or Apple?＋
No. epubio creates and validates destination packages and guides the handoff. You confirm the binding publication in the respective portal.
05What makes ReleaseTwin different?＋
ReleaseTwin connects changes across manuscript, metadata, cover, EPUB, print and destination packages. It shows which edition is no longer current after a change.
06Is epubio a subscription?＋
No. BookPass is a one-time, project-based payment without automatic renewal or sales commission.
YOUR BOOK DESERVES A CLEAN PATH
An idea begins quietly. Its publication should feel assured.
Write, produce and hand off your book in a system that understands the connections.
Open existing account→