Four ways out, no second tool
Every book leaves Quillard in four formats, from the File menu: Word, EPUB, Markdown and a typeset PDF you can print.
Word export writes real headings and styles rather than a wall of formatted text, so a copy editor receives something they can work with. EPUB produces a valid e-book — no conversion step, no third-party service.
Markdown, whole or in part
Markdown can be the whole book, one chapter, or one section. That last option is the one people use most: it is how a chapter goes into an email, a blog draft, or someone else’s editor without ceremony.
Printing
The PDF is typeset, not screenshotted: proper pages, page breaks that respect chapters, and figures kept whole. It is meant to be the thing you hand to a reader who wants paper.
Pictures, links and captions all survive into every format. If a thing is in the manuscript, it comes out the other end.