2026-06-24 · all guides

KDP Proof Copies: How to Order One and What to Check

What a KDP proof copy is

A proof is a physical copy of your book printed from the exact files you have uploaded, ordered before the book goes on sale. KDP prints it on the same presses and paper as retail copies, so what you hold is what customers will receive, with one visible difference: a Not for Resale watermark on the cover marks it as a proof.

You order proofs from your KDP bookshelf once your interior and cover files have passed the automated review. You pay the print cost of the book plus shipping; there is no markup, but there is also no royalty involved because you are the buyer.

Proofs are distinct from author copies. Author copies are unwatermarked and can only be ordered after the book is published. Proofs exist precisely so you can catch problems while the book is still unpublished and changes are free of consequence.

What a proof costs you

The price is KDP printing cost plus shipping. For black-and-white paperbacks, printing costs a flat 2.30 dollars for books under 110 pages, and 0.85 dollars plus 1.2 cents per page for books of 110 pages or more. A 200-page proof therefore prints for 3.25 dollars, and a 300-page proof for 4.45 dollars, before shipping.

Shipping is usually the larger share of the total for a single copy, so if you expect to iterate, plan your changes in batches rather than ordering a proof after every small fix. Order one proof, collect every issue in a single pass, fix them all, then decide if a second proof is warranted.

For most text-only books, one proof round is enough. Books with photographs, tables, or fine layout work often justify two rounds, because ink density and image darkness on paper are hard to judge on screen.

The inspection checklist

Start with the cover. Check that the spine text sits centered on the spine and does not wrap onto the front or back panel; KDP requires 0.0625 inches of clearance between spine text and each spine edge, and a proof shows you whether your real-world tolerance is tighter. Check that nothing important was trimmed near the edges and that the barcode area in the bottom-right of the back cover, a 2 by 1.2 inch zone, prints cleanly.

Then open the book flat and read a few pages near the middle. The inside margin, the gutter, should leave text comfortably readable without cracking the spine. KDP requires 0.375 inches of gutter up to 150 pages, 0.5 inches for 151 to 300 pages, 0.625 inches for 301 to 500, and 0.75 inches for 501 to 700, but requirements are minimums; judge readability with your own eyes.

Finally, check print quality details: page numbers and running headers positioned consistently, images dark enough but not muddy, no unexpected blank pages, and the first and last pages of each chapter starting where you intended.

Common problems a proof reveals

The most frequent discovery is that the cover looks different in print than on screen. Screens are backlit and covers are not, so dark covers print darker and saturated colors print duller. If your title is dark text on a dark background, the proof will tell you whether it survives.

The second is spine drift: the wrap can shift a small amount side to side in manufacturing, which is why spine text needs its clearance and why spine text on books under roughly 100 pages is a bad idea. A proof makes any drift visible immediately.

The third is interior grayscale: photos and screenshots that looked crisp as RGB images can band or wash out in black-and-white printing. If images matter to your book, evaluate every one of them in the proof.

When you can skip the proof

If you are republishing a minor text correction to a book whose physical format is unchanged, the digital previewer is usually sufficient. For a first edition, a new trim size, a new cover, or any page count change large enough to alter the spine, order the proof. The cost of one proof is a few dollars; the cost of a misprinted spine discovered by your first reviewer is a one-star review.

If you generated your book with a service that produces the interior and wrap cover as a matched set, such as ebookdone, the dimensional errors are handled for you, but a proof is still the only test of how your specific content looks on paper.

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