Knowledge · Rule
Front-only cover uploaded where full wrap is required
Cover · C-RATIO
Definition
The upload appears to be a front-only cover, but KDP paperback export needs a full wrap that includes back cover, spine, and front cover.
Why
- Ebook front JPG uploaded into the paperback wrap slot.
- Design file exported without back and spine panels.
- Aspect ratio matches trim front, not full-wrap width.
- Wrong KDP download template (front) used instead of full cover template.
Impact
May block submission on KDP when this rule fails.
Platforms
| Platform | Result |
|---|---|
| KDP | May reject |
| Apple Books | Unknown |
| Google Play | Unknown |
| Kobo | Unknown |
References
- KDP full cover template
- Cermify cover engine — C-RATIO
Last updated · 2026-08-03
Why we believe
Provenance is loaded from RID (same source as Rule Radar) — not a second copy.
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