7 posts on this topic.
6 October 2026 · 7 min read
KDP spine width and cover size: the exact formula
How to calculate KDP spine width and full-wrap cover size: the per-page paper multipliers, the bleed maths, three worked examples and the common mistakes.
3 October 2026 · 6 min read
KDP sudoku interior specs: trims, margins and solutions
The trim sizes, margins, gutter, bleed and solutions layout a KDP sudoku interior needs to pass review, with the large-print grid numbers that sell.
29 September 2026 · 9 min read
How to publish a paperback on KDP: the checklist
The ordered checklist for publishing a paperback on Amazon KDP: trim, paper, page count, interior and cover PDFs, metadata, pricing, proof and review.
22 September 2026 · 7 min read
Journal and planner interior specs: trim, gutter, bleed
The numbers a journal or planner interior must hit at KDP, Lulu or IngramSpark: trim sizes, the gutter by page count, safe area, bleed and even page counts.
17 September 2026 · 6 min read
KDP crossword interior specs: trim, margins and clues
The trim sizes, margins, gutter and clue-list layout a KDP crossword interior needs to pass review, with the 14pt clue floor and an 8.5 by 11 trim.
14 September 2026 · 5 min read
How to make a word search with a print-ready answer key
How to make a word search with a clear answer key: the two solution styles, keeping the answer section compact, and how many answers per page.
14 September 2026 · 6 min read
KDP word search interior specs: trim, margins and gutter
The trim sizes, margins, gutter and bleed a KDP word search interior needs to pass review, with the large-print numbers that actually sell.