# What is the EPUB manifest?

Source: https://epublab.com/glossary/manifest/ (updated 2026-11-03)

The manifest is the list, inside the OPF package document, of every file that belongs to the publication, each with an id, a path and a media type. A file in the ZIP that is not in the manifest, or a manifest entry with no file, is an error.

## Why it matters when you convert a PDF to EPUB

A PDF converter generates many files at once (one XHTML per chapter, extracted images, a stylesheet, the cover, the navigation document), and each one must appear in the manifest with the right media type. Missing or mislabelled entries are among the most common EPUBCheck errors in hand-made or edited EPUBs.