Check the same EPUB you plan to retry
The scanner needs the packaged EPUB so it can run EPUBCheck, read container.xml and content.opf, and follow the internal paths that KDP or Kindle Previewer rejects.
Have the failed EPUB file? Upload it for a scan.
Use the .epub that failed KDP, Kindle Previewer, or EPUBCheck. Only have the error text? Match the error first, then upload when you need affected paths and repair decisions.
I have the EPUB fileUpload it and get the scan report.The report shows affected package paths, repair decisions, and whether a checked repair is ready before you retry.I only have error textMatch the EPUBCheck or KDP error first.Use the error wording to choose the right guide before uploading a file.
What you get back
See a sample report- whether the EPUB opens as a valid package
- which file path, link, manifest entry, TOC target, image, or stylesheet is causing the block
- whether the issue can be repaired here, needs your review, or is outside scope
- whether a checked repair download is available and what changed
- what to fix next and a summary you can copy or send
Why the file is needed
The repair decision comes from the EPUB package, not from the error text alone.
Trace the package paths
The report names files such as OEBPS/content.opf, nav.xhtml, chapter XHTML, images, stylesheets, or anchors so you can find the failing package entry.
Show whether a checked repair is ready
If a checked repair is available, the report shows what changed and which file to retry.
Fit check
Use this upload for a retry-ready EPUB, not for source conversion or book editing.
Use this upload when
- A reflowable EPUB 2 or EPUB 3 file is ready for another KDP, Kindle Previewer, or EPUBCheck attempt.
- You need the affected path, repair decision, or checked-download status from the actual EPUB package.
- The problem looks like structure, metadata, navigation, links, anchors, or ZIP packaging, not book editing or account setup.
Not for this upload
- DOCX, PDF, KPF, KCB, or ZIP source files
- Fixed-layout, comics, DRM-protected, or image-first EPUBs
- Formatting redesign, prose edits, or chapter-order decisions
- KDP account, listing, pricing, tax, or review workflow issues