A manuscript that lives inside someone else's server is only yours while the subscription lasts and the connection holds. Draftline keeps your book as a single file on your own disk, in a format you can open in ten years, and the application never needs the internet to open it, save it, or check it.
The book is a `.draftline` file, which is a zip archive of HTML chapters and JSON metadata, and you can save it in any folder your cloud already syncs. Before every save Draftline writes a numbered backup beside the file and keeps the last ten, and inside the file it keeps a history of chapter snapshots, recorded ten minutes after you stop editing a chapter and again immediately before and after any accepted AI pass, so an earlier version of a chapter is always there to compare against. There are no Draftline servers, the app has no telemetry, and nothing in it phones home.
If you are fifty thousand words into a book somewhere else, you do not paste it in chapter by chapter. Draftline imports EPUB and DOCX, which between them cover what Word, Google Docs, Scrivener, and every e-book tool export, and rebuilds the manuscript on the way in: headings become chapters, a title page or dedication is routed to front matter and an afterword to back matter, and a horizontal rule between scenes becomes the ⁂ scene break. Anything the importer had to skip or truncate is listed as a warning before you commit.
When the book is finished you export it from one dialog as an EPUB for storefronts and e-readers, a DOCX for an editor who works in track changes, or a PDF. The print-ready PDF is the part most manuscript tools leave to a typesetter: you choose a trim size of 5×8, 5.25×8, 5.5×8.5, or 6×9 inches and it lays out the book with a bleed area, crop marks, mirrored margins for binding, running headers carrying the author and title, chapter drop caps, and a generated table of contents. Front matter, scene breaks, and chapter headings survive every format because they are structure in the file rather than formatting on the page.
A standard letter-size PDF is also available for proofs and submissions.
Whether the wifi is flaky, absent, or switched off on purpose, the manuscript is on your disk and stays there.