What KDP trim size should I design for?
Choose the trim size before designing. Smart Book Setup shows the manuscript size, bleed size, cover size, and safe area so your export matches Amazon KDP formatting requirements.
Smart Book Setup
KDP Book Setup Tool
Prepare the correct KDP trim size, bleed, spine, margins, and export dimensions before you design.Local processing · no file storage
Local session ready
Smart Book Setup
KDP spec calculator
Calculate print-ready manuscript, cover, spine, safe area, and export specs before you design.
Live layout diagram
Trim, bleed, safe area, spine, and barcode zones update as you edit.
Back cover safe area
Barcode
Spine 0.225"
Front cover safe area
Trim
Bleed / wrap
Safe area
Spine / barcode
KDP setup FAQ
When do I need KDP bleed?
Use bleed when artwork, backgrounds, or coloring book pages touch the edge. No-bleed is safer for journals, text interiors, and books with white margins.
Why does spine width change?
KDP spine width depends on page count, paper type, and interior type. A thin spine may not support readable spine text.