Publishing

Building an EPUB That Does Not Break

Tomas Lindqvist, Production Lead · 11 February 2026 · 7 min read

Validation, reflow, and the formatting habits that cause retailer rejections.

Most rejected EPUBs fail for the same three reasons: fixed pixel dimensions, missing metadata, and unclosed markup inherited from a word processor.

Always validate before upload. A ten-second check prevents a two-day review delay.

formatting

epub

Voice, orientation, and a reason to turn the page. Everything else in your opening is negotiable.

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