KDP error: EPUB doesn't pass EPUBCheck validation
Last reviewed by Robert Prime — May 2026 Quick Answer: Your EPUB file fails KDP's automated validator. Run it through EPUBCheck (free) at …
EPUB
Tags archive — 5 articles
KDP error: Fixed-layout metadata missing for picture book
Last reviewed by Robert Prime — May 2026 Quick Answer: Your fixed-layout Kindle file (picture book, cookbook, fixed-page art book) is …
KDP error: Right-to-left language flag missing in OPF
Last reviewed by Robert Prime — May 2026 Quick Answer: Your Arabic, Hebrew, Urdu, or other right-to-left language Kindle file is missing the …
KDP error: Table of Contents links don't resolve
Last reviewed by Robert Prime — May 2026 Quick Answer: Your Table of Contents links don't go to the chapters they should. In Word, your TOC …
EPUB vs MOBI: What to Upload to KDP in 2026
Last reviewed by The publishing.co.uk Team — May 2026 Amazon deprecated the MOBI format in August 2022. If you are publishing a Kindle eBook …