Free KDP error decoder
KDP upload error center
Diagnose KDP manuscript upload errors without rebuilding everything.
Paste the exact message first. Then isolate whether the problem belongs to the interior, cover, export, browser session, listing metadata, or a temporary platform failure.
✓Error-family diagnosis✓Interior and cover paths✓Links to the next exact check
The message stays in your browser and is not uploaded.
Six error families cover most first checks
Page-size and bleed errors point to export geometry. Margin warnings usually name pages that cross a safe boundary. Font errors require a fresh PDF with permitted fonts embedded. Processing failures can come from encryption, corruption, or renaming a file instead of exporting it again. Cover errors often begin with an outdated page count. Metadata errors mean the cover, interior, and KDP listing disagree.
| Message mentions | Check next | Related tool |
|---|---|---|
| Trim, page size, bleed | Interior page boxes | Print-ready PDF checker |
| Margin or gutter | Named pages and final page count | Formatting checklist |
| Font or embedding | Fresh unlocked PDF export | PDF checker |
| Cover or spine | Final pages and paper | Cover calculator |
| Metadata, title, author | Cross-file consistency | Release preflight |
Separate file failure from platform failure
Confirm that the file opens locally, use a supported browser, remove extensions that alter uploads, and check the KDP service status or community reports before making destructive layout changes. Preserve the failed file and message so each retry changes one variable, not five.
FAQ
Frequently asked questions
Should I keep uploading the same failed file?
No. Identify the cause and export a fresh replacement. Repeatedly renaming or resubmitting the same package does not repair it.
What if the message contains no useful detail?
Record the time, browser, file name and size, confirm the file locally, then distinguish a temporary platform problem from a reproducible file problem.
Move from the message to the named file.
Check the PDF, EPUB, DOCX, or cover geometry that the diagnosis points to.