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.
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Margins
Expert articles on KDP formatting, self-publishing, and book design for UK authors. 2 guides and counting.
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KDP Formatting
1 articleTools & Software
1 articleKDP Margin Calculator — Get Exact Gutter Margins for Your Page Count
Calculate the exact gutter and outside margins required for your Amazon KDP paperback based on page count and trim size. Uses Amazon's official margin table.