Vellum

Vellum is a macOS‑only application that formats manuscripts into both ebook and print editions. Users import their text and the software automatically generates title pages, tables of contents, and backmatter, applying a chosen style consistently across all chapters. It supports a range of book styles and allows custom ornaments, drop caps, and embedded fonts, with instant preview updates for various devices and print layouts.

The program produces files for major ebook platforms—including Kindle, Kobo, and Apple Books—exporting EPUB 2/3, MOBI, and ACE‑approved accessible outputs. For print, Vellum handles trim size selection, margin and pagination setup, widow handling, spread balancing, and creates professional‑grade PDF/X‑1a files, offering options for paperback, hardcover, large print, and full‑bleed backgrounds.

Authors and publishers can maintain a single source file and regenerate all editions in seconds when edits are needed, keeping digital and printed versions in sync. Vellum targets writers who want a streamlined workflow for producing polished, market‑ready books without manual layout work.