Metadata

An EPUB can contain additional information about your book in the form of metadata. E-reader, websites and e-book management software can then use this information to for example improve your user experience. For example, Calibre can sort e-books based on author, publisher, title, etc.

Metadata Passage

If you create a special passage in Twine with the name metadata that contains this metadata, Spiner will automatically put that information on the resulting EPUB output.

Meta	Number	Description
identifier	1 or more	Unique identifier for your book such as UUID, DOI, ISBN or ISSN.
title	1 or more	Title of your book.
language	1 or more	Language of your book in the form specified by RFC5646 (e.g. en-US).
contributor	0 or more
creator	0 or more
date	0 or more
description	0 or more
format	0 or more
publisher	0 or more
rights	0 or more
subject	0 or more
type	0 or more

For example, your metadata passage could contain the following content:

XML

<xtw-metadata>
	<title>My Title</title>
	<language>en-US</language>
	<identifier scheme="isbn">9780000000001</identifier>
	<creator>The creator</creator>
	<contributor>A contributor</contributor>
	<publisher>The publisher</publisher>
	<subject>Subject</subject>
	<description>Lorum ipsum dolor sit amet.</description>
	<date>2000-01-01T00:00:00Z</date>
	<type>Type</type>
	<format>Format</format>
	<rights>Rights</rights>
</xtw-metadata>