EPUBFILEWhy metadata deserves a final pass
Metadata is the information packaged inside an ebook, separate from the description you type into a retailer's listing form. Reading apps and library systems use it to identify the book, display its title and creator, choose language behavior, and sometimes show the cover before the reader opens the file. A mismatch can make a finished book look careless or make files harder to organize.
Metadata does not replace the retailer's product page. It is the book's own internal record, and it should agree with the edition you are distributing.
The pre-publication checklist
- Title and subtitle: match the title page and the edition listing. Remove draft labels and accidental filename text.
- Creator names and roles: check spelling and order for authors, editors, translators, illustrators, or other credited contributors.
- Language: set the language of the book's main text. For multilingual books, make sure language changes within the text are marked where appropriate.
- Identifier: use the identifier assigned to this edition, if applicable. Do not copy an identifier from a different format or edition without checking your distribution rules.
- Cover: confirm that the intended cover is included, displays correctly, and is not an old draft or a print-wrap image.
- Reading order and navigation: make sure front matter, chapters, and back matter appear in the intended sequence and that the contents links point to the right places.
Inspect, validate, then read
An EPUB info viewer is useful for a quick inventory: it can expose the metadata, cover, chapters, and package contents without requiring you to unzip the book manually. That makes it easier to spot an empty author field, the wrong cover, or a chapter that is missing from the reading order.
Inspection is not validation. A viewer that displays the package successfully may not check every required EPUB rule, accessibility issue, or retailer-specific requirement. Use a dedicated validator for conformance checks, then open the file in the reading apps and devices that matter to your audience. Look for missing fonts, broken images, odd page breaks, and navigation that does not work.
Keep editions separate
When you update a book, keep source files and final exports clearly named by edition and date. A revised translation, corrected second edition, audiobook companion, and print edition should not accidentally inherit metadata from one another. Before upload, inspect the exact exported EPUB—not just the source document or a previous version.
