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COLONFILM

Free tool · Calculators

COVER TEMPLATE calculator.

Full cover, safe zone, bleed, spine and barcode area for the platform you're actually publishing on — plus a guide file you can download and open in your editor.

Platform

Binding

Live-verified against KDP's own cover calculator (100pg and 300pg, 6"×9", cream).

Trim size

Paper

B&W interior only — color-interior paper (premium/standard color) uses different thickness constants we haven't verified.

Cover guide

BACKFRONT

Solid black = trim line. Pink dashed = bleed. Blue dashed = cover safe zone. Purple dashed = spine safe zone. Pink box = barcode zone. Open the download as a guide layer in Photoshop, Illustrator or Canva.

All measurements (for your designer)

1Full cover

13.000" × 9.250"

2Cover paneli

6.000" × 9.000"

3Safe zonei

5.875" × 8.750"

4Bleedi

0.125" × 0.125"

5Margini

0.125" × 0.125"

6Spinei

0.750" × 9.000"

7Spine safe zone

0.625" × 8.750"

8Spine margini

0.063" × 0.063"

9Barcode margini

0.250" × 0.250"

19.0mm spine · Amazon KDP, paperback, B&W. Barcode box itself is the standard 21.2" ISBN size — leave it empty and white.

GOT YOUR TEMPLATE? Now it needs a cover.

Print covers with back & spine, ready for KDP and IngramSpark — from $340.

See book cover packages →