KDPrint: Print-on-Demand Service Guide

Okay so KDPrint is basically Amazon’s print-on-demand service that’s built right into KDP and honestly it’s one of those things that seems complicated until you actually do it once, then you’re like oh that’s it?

The main thing to understand is KDPrint isn’t a separate platform you sign up for. When you upload a paperback or hardcover to KDP, you’re automatically using their print-on-demand system. Amazon prints your book only when someone orders it, ships it to them, and you get paid the royalty. No inventory sitting in your garage, no upfront printing costs. I remember when I first started in 2017 I was gonna go with a traditional POD service and pay like $500 upfront… so glad I didn’t do that.

How the Whole System Actually Works

You create your book file (PDF usually), upload it through the KDP dashboard, and Amazon’s system checks if it meets their specs. The file goes to their printing facilities—they’ve got several across the US, Europe, and Japan. When someone orders your book on Amazon, the facility closest to that customer prints it, usually within 24-48 hours, then ships it out.

Your royalty is calculated by: list price minus printing costs minus Amazon’s cut (40% for books distributed to other retailers, or you can opt out of expanded distribution and keep that margin). The printing cost depends on page count and whether it’s black and white or color interior.

Setting Up Your First Book

Go to your KDP dashboard and click “Create Paperback” or “Create Hardcover”—yeah they added hardcovers a couple years ago and honestly the quality is pretty decent. You’ll fill out the basic details: title, author name, description, all that stuff.

The trim size matters more than you’d think. Most books are either 6×9 (standard for non-fiction and novels) or 8.5×11 (workbooks, journals). I’ve published like 80 books in 6×9 and maybe 40 in 8.5×11. The 5×8 size is good for smaller novels or devotionals. Don’t pick a weird size just to be different because it affects printing costs and honestly readers expect certain sizes for certain genres.

Paper type—you’ve got white or cream. Cream looks more “book-like” for fiction, white is better for books with images or when you need high contrast. I always use cream for my text-heavy stuff because it’s easier on the eyes.

The Manuscript File Thing

This is where people get stuck. Your interior file needs to be a PDF that meets Amazon’s specs. Margins are super important—you need at least 0.25 inches on the outside edges, but honestly I do 0.5 inches to be safe. The inside margin (where the book binds) needs to be bigger, and it increases with page count. For a 100-page book you might need 0.375 inches, but a 400-page book might need 0.625 inches on that inside edge.

Amazon has templates you can download for Word and other programs. Use them. Seriously just use the templates because I spent like three days reformatting a book once because I thought I knew better and… I didn’t.

Oh and another thing—your page count has to be between 24 and 828 pages. It also has to be divisible by 2 because books are printed on sheets that become two pages. Amazon’s system will tell you if something’s wrong during the upload process.

Bleed Settings

If your book has images or colored backgrounds that go to the edge of the page, you need to use bleed. That means your images extend 0.125 inches past where the page will be cut. Otherwise you get this weird white line on the edge where the cutting isn’t perfectly precise.

Most low-content books and text-only books don’t need bleed. I maybe use bleed on like 10% of my books? But when you need it, you really need it.

Cover Design Requirements

The cover is actually more technical than the interior. You need a single PDF that includes the front cover, spine, and back cover all in one image. Amazon has a cover calculator that tells you the exact dimensions based on your page count and paper type.

The spine width changes based on page count—a 100-page cream book has a thinner spine than a 300-page white book. The calculator gives you the spine width in inches and you gotta design around that. I use Affinity Publisher mostly but Canva works if you’re just starting out.

Barcode—don’t put one on your cover. Amazon adds it automatically during printing. If you put your own barcode on there, you’ll have two barcodes and it looks stupid. Trust me on this.

Cover Template Download

Download the specific template for your book from the cover calculator page. It’ll have guides showing you where the spine is, where the safe zones are (stuff that won’t get cut off), and the trim lines. Keep important text and images inside the safe zone, at least 0.125 inches from any edge.

Wait I forgot to mention—your cover file is usually pretty big dimension-wise. Like for a 6×9 book with 200 pages, you might have a cover that’s over 12 inches wide (front + spine + back). Make sure your resolution is 300 DPI minimum. I usually work at 600 DPI for covers because why not, but 300 is the requirement.

Pricing and Royalties

This is where it gets interesting. Amazon shows you the printing cost before you set your price. For a 6×9 black and white book with cream paper:
– 100 pages costs about $2.15 to print
– 200 pages costs about $3.30 to print
– 300 pages costs about $4.45 to print

Add roughly $0.012 per page to those numbers and you’re close enough.

Your royalty is 60% of (list price minus printing cost) if you don’t use expanded distribution. So if you price a 200-page book at $9.99, and printing costs $3.30, your royalty is 60% of $6.69 which is… $4.01 per sale.

If you opt into expanded distribution (which puts your book in other online retailers and bookstores), Amazon takes 40% instead of leaving you 60%. I usually skip expanded distribution for low-content books but use it for my actual content-heavy books because the extra exposure sometimes matters.

Color Books Change Everything

Color printing is way more expensive. A 100-page color book might cost $6-7 to print versus $2.15 for black and white. This basically means you gotta price color books higher to make any money. Most of my coloring books (yeah I have like 25 coloring books published) are priced at $6.99-$8.99 and I make maybe $1-2 per sale. It’s fine for volume but you’re not getting rich on $1.50 royalties.

The Review Process

After you upload everything and hit publish, Amazon reviews your book. Usually takes 24-72 hours. They’re checking that your files meet technical specs and that your content doesn’t violate their guidelines.

Sometimes they reject books for weird reasons. I had a journal rejected once because the interior was “too repetitive”—it was literally a lined journal, of course it’s repetitive. I appealed and they approved it. Don’t freak out if you get a rejection, just read why and either fix it or appeal if you think they’re wrong.

Ordering Author Copies

This is actually cool—you can order copies of your own books at printing cost plus shipping. No royalty, just the base cost. So that 200-page book that costs $3.30 to print? You can order it for $3.30 plus like $3-4 shipping. I order author copies sometimes to check quality or to have on hand for local events or whatever.

The quality is honestly pretty consistent. I’ve ordered the same book like 6 times over two years and they all look basically identical. The color can vary slightly between printings but we’re talking minor stuff that only I would notice because I’m neurotic about it.

Hardcover Differences

Hardcovers cost more to print (obviously) but the margins can actually be better because people expect to pay more for them. A 200-page hardcover might cost $7-8 to print but you can price it at $19.99-$24.99 and people don’t blink.

The hardcover case is like… decent quality? It’s not library-quality binding but it’s definitely better than a lot of indie hardcovers I’ve seen. The dust jacket is paper, not laminated, which some people complain about but honestly it’s fine for the print-on-demand model.

Common Problems and Fixes

Interior file rejected for margins—go back and check that inside margin especially. Download their template and compare it to yours page by page if you have to.

Cover rejected for barcode—you probably put your own barcode on there, remove it.

Colors look different when printed—this is the big one. Your monitor shows RGB colors but printers use CMYK. What looks like a bright blue on screen might print as a darker blue. Always order a proof copy before you start promoting a color book. I learned this the hard way with a planner that looked amazing on screen and… mediocre when printed. Had to go back and adjust all the colors.

Spine text is cut off—you didn’t account for the spine width properly or you put text too close to the edge. Use the template guides and keep spine text at least 0.0625 inches from the edges of the spine area.

Pro Tips From Actually Doing This

Order a proof copy before you publish. You can do this during the review process. It costs you the printing cost plus shipping but you can see exactly what customers will get. I always do this for books with images or specific formatting. For basic text books I sometimes skip it if I’ve used the same layout before.

Check your books on other Amazon marketplaces. Your book will be available on Amazon.com, Amazon.co.uk, Amazon.de, etc. The pricing converts automatically but sometimes the conversion is weird and you’re priced way too high or too low in other markets. You can set specific prices for each marketplace in your KDP dashboard.

The “Look Inside” feature pulls from your uploaded file. Make sure your first pages look good because that’s what potential buyers see. I usually put a nice title page, copyright page, then table of contents or intro. Don’t put like 10 pages of filler before the actual content starts.

Wait this is gonna sound weird but—check your file on different devices before uploading. I preview PDFs on my laptop, my tablet, and my phone just to make sure everything looks right at different sizes. Sometimes weird formatting issues only show up on certain screen sizes and if you catch them before uploading it saves time.

Expanded distribution takes like 6-8 weeks to actually get your book into other retailers after you enable it. And honestly most of those sales still come from Amazon anyway in my experience. Maybe 5-10% of my paperback sales come from expanded distribution channels.

Updating Published Books

You can update your interior or cover files anytime. Just go to your bookshelf, click the three dots next to the book, and choose edit. Upload the new files and they go through review again. The book stays live during review usually.

Your changes go live within 72 hours typically. But here’s the thing—books that were already printed with the old files are still gonna be out there. If someone returns an old version and it gets resold as “used,” it’ll have your old content. Can’t really do anything about that.

What Actually Sells

Okay this isn’t strictly about KDPrint but since you’re setting this up… low-content books (journals, planners, notebooks) sell consistently if you hit the right niches. Coloring books for adults are still decent. Activity books for kids if you can rank for the right keywords.

Regular books with actual content obviously depend on the content being good and your marketing. The print-on-demand part just handles the physical production—you still gotta do everything else to actually get sales.

I’ve got books that sell 2-3 copies a month consistently for years. I’ve got other books that had like 20 sales total then died. It’s super variable and depends way more on your niche research and cover design than on anything technical about KDPrint itself.

My dog just knocked over my coffee cup while I’m writing this… anyway yeah KDPrint is pretty straightforward once you get past the technical file setup part. The system works, the quality is decent, and you can actually make money if you treat it like a real business instead of just uploading random stuff and hoping.