KDP error: Barcode / ISBN placement on the cover
Why KDP flags your cover for the barcode area — and exactly where the ISBN barcode goes. UK-specific, 2026 spec.
The library
Rejection
Expert articles on KDP formatting, self-publishing, and book design for UK authors. 29 guides and counting.
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KDP Formatting
29 articlesKDP error: PDF won't upload or convert correctly
Why your interior or cover PDF fails to upload or convert on KDP — embedded fonts, bleed mismatch, file size, security settings — and the exact fix. UK-specific, 2026 spec.
KDP page-count rules: minimum, maximum, and even pages
KDP's minimum and maximum page counts for paperback and hardcover — by ink and paper type — plus whether you need an even page count. UK-specific, 2026 spec.
KDP error: AI-generated content not disclosed
Why KDP rejected your book for failing to disclose AI-generated content — and the exact fix. UK-specific, 2026 spec.
KDP error: Blank chapter detected
Why KDP rejected your book for a blank chapter — and the exact fix. UK-specific, 2026 spec.
KDP error: Bleed misconfigured for your trim size
Why KDP rejected your book for incorrect bleed — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover dimensions don't match interior trim
Why KDP rejected your book for cover-interior trim mismatch — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover text or critical elements in bleed zone
Why KDP rejected your cover for text in the bleed zone — and the exact fix. UK-specific, 2026 spec.
KDP error: Cover under 2560×1600 pixels
Why KDP rejected your ebook cover for being too small — and the exact fix. UK-specific, 2026 spec.
KDP error: Crop marks present in print PDF
Why KDP rejected your PDF for crop marks — and the exact fix. UK-specific, 2026 spec.
KDP error: Embedded image too large
Why KDP rejected your file for an oversized embedded image — and the exact fix. UK-specific, 2026 spec.
KDP error: EPUB doesn't pass EPUBCheck validation
Why KDP rejected your Kindle file for EPUB validation errors — and the exact fix. UK-specific, 2026 spec.
KDP error: Fewer than 24 pages (paperback minimum)
Why KDP rejected your paperback for being too short — and the exact fix. UK-specific, 2026 spec.
KDP error: File size over 650MB
Why KDP rejected your upload for exceeding the file size limit — and the exact fix. UK-specific, 2026 spec.
KDP error: Fixed-layout metadata missing for picture book
Why KDP rejected your picture book or comic for missing fixed-layout flags — and the exact fix. UK-specific, 2026 spec.
KDP error: Font not embedded in PDF
Why KDP rejected your PDF for non-embedded fonts — and the exact fix. UK-specific, 2026 spec.
KDP error: Image resolution below 300 DPI
Why KDP rejected your book for low-resolution images — and the exact fix. UK-specific, 2026 spec.
KDP error: ISBN on copyright page doesn't match metadata
Why KDP rejected your book for an ISBN mismatch — and the exact fix. UK-specific, 2026 spec.
KDP error: Lorem ipsum or placeholder text detected
Why KDP rejected your book for placeholder text — and the exact fix. UK-specific, 2026 spec.
KDP error: Margin too small (gutter or outside)
Why KDP rejected your book for a margin violation — and the exact fix. UK-specific, 2026 spec.
KDP error: More than 828 pages (paperback maximum)
Why KDP rejected your paperback for exceeding the page limit — and the exact fix. UK-specific, 2026 spec.
KDP error: Odd page count in print interior
Why KDP rejected your paperback for an odd page count — and the exact fix. UK-specific, 2026 spec.
KDP error: PDF transparency layers not flattened
Why KDP rejected your PDF for unflattened transparency — and the exact fix. UK-specific, 2026 spec.
KDP error: RGB images in print interior (CMYK required)
Why KDP rejected your print PDF for mixed colour spaces — and the exact fix. UK-specific, 2026 spec.
KDP error: Right-to-left language flag missing in OPF
Why KDP rejected your Arabic, Hebrew or Persian book for missing RTL flags — and the exact fix. UK-specific, 2026 spec.
KDP error: Spine too narrow for spine text
Why KDP rejected your cover for spine text on a too-thin book — and the exact fix. UK-specific, 2026 spec.
KDP error: Table of Contents links don't resolve
Why KDP rejected your ebook for a broken Table of Contents — and the exact fix. UK-specific, 2026 spec.
KDP error: Title on cover doesn't match dashboard metadata
Why KDP rejected your book for a title mismatch between cover and dashboard — and the exact fix. UK-specific, 2026 spec.
Common KDP Rejection Reasons and Fixes — Interactive Troubleshooting Tool
Interactive troubleshooting tool for Amazon KDP rejections. Select your rejection reason and get step-by-step fix instructions. Covers the top 15 rejection reasons.