KDP crossword interior specs: trim, margins and clues

Most first crossword books that fail KDP review fail on the interior, not the content. The grids are fine; the page geometry is wrong, or the clue list quietly shrank to fit. Getting the trim, margins, layout and resolution right the first time is mostly a matter of knowing the numbers, so here's the set that matters most in this niche.

KDP updates its guidance from time to time, so treat these as the working numbers and check the current KDP help pages before a big run.

Trim size

The trim size is the finished page dimension. For a crossword, the deciding factor is that one page carries two things that both need room: a numbered grid whose squares stay writable, and a clue list that reads as body copy.

• 8.5 by 11 inches: the default for large-print crossword. Room for a full grid and a two-column clue list at a readable size.
• 8 by 10 inches: slightly more compact, still comfortable, a little cheaper to print.
• 6 by 9 inches: fine for a compact or quick-crossword book, but the grid and clues both get tight. Not the first choice for a large-print title.

Pick one trim and design the whole interior to it. The studio exports any KDP trim from the same project, so you can produce a large-print and a standard edition from one generation.

The clue list is the body copy

This is the spec that has no analogue in a word search book. A word search page is a grid and a short word bank. A crossword page is a grid plus an Across and Down clue list, and that list is real prose of unpredictable length. It is the book's body text, and it has to be read.

A good tool reserves the space the clues need at a readable size first, then gives the grid the rest. If the clues will not fit, it should tell you, not shrink them past the point an older solver can read.

Grid-over-clues, or facing pages

That budget problem has two clean solutions:

• Grid over clues: the grid sits at the top of the page and the clue list runs beneath it, usually in two columns. This is the compact choice, and it works whenever both fit at a readable size.
• Facing-page layout: the grid prints on one leaf and its clues on the facing leaf. It uses more pages, but nothing has to shrink, so it is the safe choice for a large-print book with long clues.

Pick the layout per book, not per page, so the whole title reads consistently.

Margins and gutter by page count

Margins are the white space between your content and the page edge. Puzzles want more breathing room than dense text does: at least 0.25 inch outside, top and bottom, and 0.5 inch reads better around a grid.

The gutter margin is the inside margin nearest the spine, and it must grow with page count so the binding does not swallow the grid. As a working guide:

• Up to 150 pages: about 0.375 inch
• 151 to 300 pages: about 0.5 inch
• 301 to 500 pages: about 0.625 inch
• 501 to 700 pages: about 0.75 inch

A generated interior sizes the gutter for your page count automatically, so you don't redo the layout every time the book grows.

Bleed

Bleed is the small overrun (0.125 inch) past the trim that lets colour or art print right to the edge after cutting. A plain crossword interior with white margins needs no bleed. Add it only if a page carries a full-bleed background or a border that touches the edge, and then extend that art 0.125 inch past the trim on every outside side.

Resolution and the file itself

• 300 DPI: the print standard. The numbered grid and its filled solution must render crisply at the finished size, not just on screen.
• A print-ready PDF: fonts embedded, one page per book page, at the exact trim (plus bleed only if used).
• Black and white: crossword interiors are almost always black-and-white, which prints far cheaper per page than colour and reads perfectly.

The KDP crossword maker exports a print-ready 300 DPI interior PDF and a separate solutions PDF at whichever trim you choose, with these margins and gutter already applied and the clue list held at the large-print floor. If you want to see the output before committing, the free generator→ prints a single puzzle and its solution at a large-print size.

The short checklist

Before you upload: one trim throughout, a clue list at 14pt or larger, a layout (grid-over-clues or facing) that keeps both grid and clues readable, at least a 0.25 inch outside margin, a gutter sized to your page count, bleed only if art reaches the edge, 300 DPI, and a matching solution for every puzzle. Get those right and the interior clears review. For the rest of the path, see the full guide to making and selling crossword books on KDP.