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Validate the ebook package first
A valid EPUB is a ZIP-based publication with a container, package document, manifest and reading spine. The converter checks those structural parts before rendering content.
Damaged archives, missing package documents and empty spines should fail clearly instead of producing a misleading blank PDF.
Follow the declared spine order
Filenames such as chapter10.xhtml can sort before chapter2.xhtml. Reading the OPF spine prevents that mistake and preserves the sequence selected by the ebook publisher.
The PDF can then generate chapter boundaries and a linked contents page from that reviewed sequence.
| Source signal | Purpose | PDF use |
|---|---|---|
| Manifest | Lists publication resources | Find supported chapter and image files |
| Spine | Defines reading sequence | Order chapters correctly |
| Metadata | Stores title, author and language | Build title page and document context |
Review the new fixed-page edition
PDF pagination is new even when the chapter order is correct. Preview the title page, contents, first chapter, image-heavy sections and final page before delivery.
- Confirm the title and author.
- Check chapter sequence.
- Open linked contents entries.
- Review the first and last PDF pages.
Put the workflow into practice
Add one EPUB or a batch, choose the fixed-page reading profile, render chapters in spine order, then preview every completed PDF before download.
Try EPUB to PDFFrequently asked questions
Clear answers before you merge
Why not sort chapter filenames?
The EPUB spine is authoritative and filenames may not sort into reading order.
Does the source EPUB change?
No. Conversion creates a separate PDF.
Can damaged EPUB packages convert?
Missing structural files should produce a clear failure for repair or replacement.
