About
EPUB Fixer explains upload-blocking EPUB structure errors.
The first version is a narrow scanner for authors and publishers who already have an EPUB file and need to understand why validation failed.
Scope
Built for failed EPUB validation, not book production.
- EPUB Fixer focuses on reflowable EPUB 2 and EPUB 3 structure checks for authors who hit KDP, Kindle Previewer, or EPUBCheck errors.
- The product explains package, metadata, manifest, spine, navigation, resource, and link problems in plain English.
- It is not an ebook editor, DOCX converter, formatting service, cover design tool, or KDP account support service.
- EPUB Fixer is independent and is not affiliated with Amazon, Kindle Direct Publishing, or EPUBCheck.
Who it helps
Useful after export, before another upload attempt.
- You already exported an EPUB and need to know why KDP, Kindle Previewer, or EPUBCheck rejected it.
- You want the affected file path and plain-English cause before editing OPF, nav, NCX, XHTML, CSS, or package entries by hand.
- You need a repaired EPUB beta only when the repair can be checked and revalidated without changing manuscript content.