Trim Sizes & Page Margins

Control your book’s physical dimensions and page margins to meet KDP and IngramSpark specifications.

Trim Sizes

Lacuna offers 12 standard trim sizes accepted by KDP:

• 5” × 8”
• 5.25” × 8”
• 5.5” × 8.5”
• 6” × 9” (most common)
• 5.06” × 7.81”
• 6.14” × 9.21”
• 6.69” × 9.61”
• 7” × 10”
• 7.44” × 9.69”
• 7.5” × 9.25”
• 8” × 10”
• 8.5” × 11”

Page Margins

You can control three margin settings for your print book:

Inner Gutter

The inner margin where pages bind together. Lacuna defaults to 0.875 inches, which provides comfortable reading space while meeting KDP requirements.

Outer Margin

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

Header and Footer Margins

Control the top and bottom margins for your headers and footers. The minimum setting is 0.75 inches.

Note

The 0.75-inch minimum includes buffer space between your header or footer and the text on the page. This ensures proper visual separation.

If you don’t use headers or footers, Lacuna automatically defaults to 0.25-inch margins on the top and bottom to maximize your available space while meeting KDP’s minimum requirements.

KDP Requirements

KDP requires a minimum margin of 0.25 inches on all edges. For detailed information about gutter margins and trim size specifications, see KDP’s Paperback Manuscript Guidelines.