Publishing requirements
Existing PDF and EPUB exports are reading and handoff copies. Publisher-qualified typesetting is in development for Amazon KDP and IngramSpark: print profiles, layout controls, font and image checks, and validated ebook output.
Until those outputs are qualified, use a suitable formatter or production professional to prepare retailer files. We do not yet claim to replace that step or submit books to retailers.
Fountain, screenplay PDF and Final Draft FDX outputs are also being developed. We will identify supported output profiles and validation limits when they are available.