I will fix epub validation errors for amazon KDP, apple books, and ingramspark
About this Gig
Did your eBook fail to upload?
Are you getting scary "EPUBCheck failed" warnings, HTML/CSS code errors, or "Missing NCX / TOC" messages when trying to publish on Amazon KDP, Apple Books, Draft2Digital, or IngramSpark?
Most word processors create hidden "junk code" when converting to EPUB. If there is even one broken line of code, publishing platforms will block your book launch. I am here to fix the code so you don't have to!
What I Will Fix For You:
- EPUBCheck Validation: Fixing unmanifested files, broken HTML/CSS, and missing tags.
- Table of Contents (TOC): Fixing broken, unclickable, or missing logical NCX/HTML TOCs.
- Formatting Breakages: Fixing weird spacing, fonts not displaying, or images floating to the wrong page.
- Metadata Issues: Fixing Title/Author/ISBN mismatch errors embedded in the file.
- Apple Books & Draft2Digital Errors: Bypassing strict Apple/Smashwords validation blockers.
Why Choose Me?
- Guaranteed Pass: I guarantee your EPUB will pass official EPUBCheck validation.
- No Lost Formatting: I fix the background code without ruining your book's look.
Send me your error message and lets get your book published!
Convert from:
EPUB
Convert to:
EPUB
My Portfolio
FAQ
I don't know what the error means, it just looks like code. Can you help?
Absolutely! Publishing platforms use strict code validators. I will look at the exact line of code causing the issue, fix the HTML/CSS in the background, and send you back a clean file.
Will fixing the code change how my book looks?
No. I only clean up the "junk code" causing the errors. Your text, fonts, and chapters will look exactly the way you intended, but they will now be 100% compliant with e-readers.
KDP says I am missing a logical Table of Contents (NCX). Can you fix this?
Yes. Amazon requires a specific hidden navigation menu (NCX) so readers can skip between chapters using their Kindle device menus. I will program this into your file.
My book was rejected by Apple Books. Is this different from Amazon?
Yes, Apple Books has the strictest EPUB validation in the world. A file that works on KDP will often fail on Apple. I specialize in fixing files to pass Apple’s strict EPUBCheck standards.

