Spinewright
Open the editor
Every KDP size
All 16 paperback trim sizes, custom sizes, and the 5 hardcover sizes. Spine width is calculated for white, cream and color paper.
Free · No account · Runs in your browser
Print-ready KDP covers, without the designer.
Pick your trim size and page count, and Spinewright works out the spine, bleed, safe zones and barcode area for you. Design the front, spine and back in one place, then download a PDF you can upload straight to Amazon KDP.
Guides that matter
Bleed, trim, safe zone, spine folds, hardcover hinges and the barcode area are drawn on the canvas. Objects snap to them.
12 starter layouts
Thriller, romance, fantasy, memoir, children's, business, journals and more. They adapt to your trim size.
Real typography
54 fonts plus your own uploads, with outlines, shadows, glow, letter spacing and spine text that fits itself.
Images done right
Fit to the safe zone, fill to the bleed, crop inside frames, adjust colour, and see a live DPI check as you resize.
Check before you upload
The print check catches text near the trim, low-resolution images, spine text on thin books and art in the barcode area.
Three steps to a finished cover
- Set up your bookPaperback or hardcover, trim size, paper and page count.
- DesignStart from a layout or a blank cover. Add your title, art and blurb.
- Preview and exportCheck it flat or in 3D, then download a 300 DPI PDF for KDP.