Paperback Cover Layout Designer

A front, a back, and a spine that fit your book.

Photos and text stay on this device.
No upload. No sign-up.

1 Size your book

DesignPrinterTrim sizeUnits

Trim width inTrim height in

Interior page countInterior ink & paper

Spine width from your printer inOutside bleed in

Text safe inset in Include spine text when it fits Reserve a white barcode area

No ISBN or barcode is generated. Keep this space clear for your printer. KDP rules checked October 19, 2026; confirm the current template.

Check your printer template

For KDP, enter the full dimensions from the template for this exact trim, paper and page count. A comparison is required before production download.

Open KDP’s cover calculatorTemplate full width inTemplate full height inTemplate spine width in I compared these dimensions with my current template

Optional PNG, JPG or WebP overlay. It is stretched to the full cover for comparison only and never exported. It does not replace the dimension check.

2 Make it yours

Text to editTextTypefacePreferred type size (pt)

Text position & size

Percentages are relative to that panel’s safe area. Each design remembers its own positions. Text wraps and may shrink to fit, but never below about 7 pt.

Left (%)Top (%)Width (%)Height (%)

Cover colorText color

Illustration accent Photo placement

Crop zoom

Left / right (0–1)Top / bottom (0–1)

Your full cover

Download

Preparing your cover…

Show trim & safe areas Show template overlay

Production files contain one full cover without guides, selection boxes or template overlays. RGB output is not CMYK or PDF/X certified. Confirm with your printer and order a physical proof. Save as PDF is available in the print dialog.

Design once. Check the whole cover.

Choose the trim and printer measurements, then edit the front, back and spine. The PDF includes the entire cover in one continuous spread. The size check is a separate document; never submit it as the finished cover.

How is a KDP spine calculated?

Printed page count and interior paper determine the width. This tool uses the inch-based formulas in KDP’s cover guidance and the submission guidelines. It rounds odd page counts up to an even count, requires a template comparison, and omits spine text below 80 printed pages. Paper and trim limits vary; only the listed KDP combinations are supported.

Will this guarantee a printer accepts my cover?

No. The output uses local RGB rendering at 300 PPI. Your printer may require a different color workflow, template or production file. Check dimensions, text, image resolution and barcode position against the current template, then review a physical proof. Custom mode uses the spine and bleed you enter rather than a supplier formula.

What happens to my photos?

They remain in this browser session and are not uploaded. Text and crop settings can return as a local draft; use Save project to download a backup including original photos. A missing photo blocks production output until restored. Start over clears this tool’s saved draft after confirmation.