About
EPUB Fixer explains upload-blocking EPUB structure errors.
It is for authors and publishers who already have an EPUB file and need to understand why KDP, Kindle Previewer, or EPUBCheck rejected it.
What it does
Find the EPUB structure problem before another upload.
- EPUB Fixer focuses on 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.
When 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.
- You only want a repaired file when the change can be checked and passes EPUBCheck again without changing manuscript content.