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Bookkraftai
EPUB validation, Kindle formatting, and publishing tools for indie authors.

Featured articles

EPUB Ghost Spacing & OPF Errors: How to Fix Them

EPUB Ghost Spacing & OPF Errors: How to Fix Them

KDP Accepted, Apple Books Rejected? Here's Why

KDP Accepted, Apple Books Rejected? Here's Why

KDP 'No TOC Found' Error? Here's How to Fix It

KDP 'No TOC Found' Error? Here's How to Fix It

Best Ebook Formats: EPUB vs PDF vs MOBI

Best Ebook Formats: EPUB vs PDF vs MOBI

How to Format an eBook for Free in 2026

How to Format an eBook for Free in 2026

What Is BookKraft AI and Why We Built It

What Is BookKraft AI and Why We Built It

Bookkraftai — eBook Formatting Blog

14
May

EPUB Ghost Spacing & OPF Errors: How to Fix Them

4 min read
06
May

KDP Accepted, Apple Books Rejected? Here's Why

5 min read
05
May

KDP 'No TOC Found' Error? Here's How to Fix It

7 min read
04
May

KDP Rejecting Your EPUB? How to Find & Fix Errors

5 min read
29
Apr

Why Is KDP Rejecting My EPUB? (And How to Fix It)

7 min read