Clear accountability
epubio is operated and product-managed by Daniel Trogisch. Provider and contact details are public in the legal notice.
Legal notice →ABOUT EPUBIO
A reliable path from manuscript to publication.
epubio is a guided book workspace for authors who want to write, validate and publish without losing the connection between their files.
Operator and product responsibility: Daniel TrogischContent reviewed 20 August 2026
EPUBIO
Why epubio is being built
A book is rarely finished in one tool. Text, metadata, cover, EPUB, print PDF and publication details evolve in parallel. Uncertainty and outdated files arise at those handoffs.
epubio connects these steps in one book project, explains blockers clearly, keeps decisions with the author and shows which edition belongs to which book state.
Built for authors
Creative decisions stay with the author. epubio structures production, checks technical requirements and identifies concrete next steps.
One project, not subscription clutter
BookPass belongs to one book project, with no automatic renewal and no share of book sales.
Understand BookPass →ReleaseTwin by epubio
ReleaseTwin connects book states. When something changes, it shows which files and approvals need to be reviewed again.
Explore ReleaseTwin →PRINCIPLES
How we judge the product
Clarity before jargon
Checks give a reason and required action, not only an error code.
Author control
No publication, store access or creative decision happens without the author.
One book state
Manuscript, design, cover and editions remain traceably connected.
Open limitations
Platforms and printers make their own acceptance decisions. epubio does not promise decisions made by third parties.
CONTINUE
Explore epubio
Create EPUBFrom manuscript to a technically validated ebook file.DOCX to EPUBWhy controlled import goes beyond simple file conversion.Validate EPUBUnderstand validation results and resolve problems deliberately.Print-ready filesConnect interior, format, spine width and cover.Free toolsEstimate spine width and understand edition changes.ReleaseTwinSee which editions become outdated after a change.