How to Prepare a Cover for KDP

Two paths to a print-ready cover

There are two ways to get a cover for your book. You can generate new cover artwork from your manuscript, or you can prepare existing cover artwork for print. Inkloom's Cover Studio handles both.

If you have cover artwork from a designer, from Canva, or from another tool, the Cover Production Studio takes that artwork and turns it into the exact cover your finished book requires. You never manually calculate pixels, inches, bleed, spine width, or placement.

CoverSpec: the single source of truth

Before any cover work begins, you need to tell Inkloom the physical specifications of your book. This is the CoverSpec: binding type (paperback or hardcover), trim size, paper type, and page count. From these inputs, Inkloom calculates every dimension: spine width, full wrap dimensions, pixel targets at 300 PPI, safe areas, and the barcode clear zone.

If you have already exported a print PDF from the Export tab, Inkloom automatically fills in the actual page count. You can override this manually, but the automatic value is more reliable.

If the page count changes later, the spec changes and the cover is marked for re-conforming. This is what sets Inkloom apart from every other cover tool.

Image inspection and quality states

Every imported image is analyzed for dimensions, PPI, color space, transparency, and effective resolution at print size. Each image gets a quality state:

• Ready: the image has enough resolution for print. No upscaling needed.
• Minor Adjustment: the image is close to the target but needs resizing. Quality will be fine.
• Upscale Recommended: the image is below 300 PPI at print size. Inkloom can upscale it, but the result will be softer.
• Insufficient Quality: the image is significantly below the required resolution. Consider getting a higher-resolution version.

Smart spine generation

If you upload front and back cover artwork but no spine, Inkloom generates a seamless spine by blending the adjoining edges of your front and back artwork. This works well when the inner edges of your artwork have compatible colors or patterns.

You can also choose a custom spine: a solid color or gradient instead of a blend. And if you have a dedicated spine image, you can upload that instead.

If your book has 79 or more pages, you can add spine text: title and author, with font, size, color, and orientation controls. If your book has fewer than 79 pages, spine text is disabled because KDP does not allow it.

Inspect the seams

The seam is where the back cover meets the spine (left seam) and where the spine meets the front cover (right seam). These are the folds in the physical book. A visible hard edge or abrupt color change at the seam looks unprofessional.

Inkloom lets you zoom into both seams at 2x magnification to inspect the transitions. If a seam looks poor, you can re-prepare with a different spine generation mode or upload a dedicated spine image.

Re-conform after page count changes

This is the feature that sets Inkloom apart from every other cover tool. When you re-typeset your manuscript and the page count changes, your spine width changes. A cover prepared for 200 pages has a different spine width than one prepared for 224 pages.

In most tools, you have to rebuild the entire cover. In Inkloom, you click Re-conform. The system preserves your front and back cover artwork exactly as they are, regenerates only the spine for the new width, re-blends the seam transitions, re-assembles the wrap at the new dimensions, creates a new version, and runs validation.

You never rebuild the entire cover for a pagination change. The front and back artwork are preserved. Only the spine adjusts.

Export options

Once your cover is prepared and validated, you can export:

• Print PDF: a single-page PDF at exact physical dimensions. No crop marks, no fake barcode. This is the file you upload to KDP as your print cover.
• Full Wrap PNG: a high-resolution PNG of the complete wraparound. Useful for archiving or editing in another tool.
• Front Only: just the front panel, extracted from the wrap. Useful for promotional materials.
• Kindle: a 1600 x 2560 JPEG for your Amazon ebook listing, generated from the front panel.

All exports are non-destructive. Uploaded originals are never modified. Every operation creates a derivative variant, and you can always return to the original.