Fix guides, organized by the error you got

Find the message KDP showed you. Each guide explains what it means, why it happened, and the exact fix — then links the free checker so you can verify the corrected file before re-uploading.

Published

Bleed errors: "insufficient bleed" and white edges on printed pages — what bleed is, the exact sizes for interiors and covers, and the export settings that actually fix it.

Cover dimensions do not match — the wraparound equation, a worked example, and the five usual causes, including page-count drift after a final edit.

Spine too narrow and spine-text rules — how wide your spine really is at your page count, when text can fit, and when a blank spine is the right answer.

In production

Low-resolution (300 dpi) warnings · Content beyond the margins (gutter) · Barcode area and ISBN placement · Metadata rejections and keyword stuffing · KDP's AI-content disclosure · Large-print paperback requirements · The 20-point pre-upload checklist.

Guides are published one at a time, each verified against KDP's current published specifications before it goes live — no bulk-generated filler. Run the free check in the meantime; it covers most of these errors automatically.