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Trim Sizes & Page Margins

Configure your book’s physical dimensions and page margins for print-on-demand publishing.

Trim Sizes

Standard trim sizes for print-on-demand:

Small
4.25” × 6.87”4.25” × 7”4.37” × 7”4.5” × 7”5” × 8”5.06” × 7.81”5.25” × 8”
Medium
5.5” × 8.5”6” × 9”6.14” × 9.21”6.69” × 9.61”
Large
7” × 10”7.44” × 9.69”7.5” × 9.25”8” × 10”8.5” × 11”

Page Margins

Inner Gutter

The inner margin where pages bind together. Lacuna defaults to 0.875 inches, which is a safe default for most page counts.

If you want to get as tight as possible, check KDP’s Paperback Manuscript Guidelines to see the minimum gutter based on your page count and trim size.

Outer Margin

The outer edge margin, automatically calculated based on your trim size to ensure proper balance.

You have two settings for controlling vertical spacing:

  • Total Space — The full distance from the top (or bottom) of the page to the first (or last) line of body text. This controls how much room your header or footer area takes up.

  • Safe Zone — The margin from the very edge of the page. Increase this if you’re seeing bleed or cutoff issues with your headers or footers.