Publishing a coloring book on Amazon KDP is one of the most accessible passive income opportunities available today. There's no upfront cost, no inventory, and Amazon handles printing and shipping for every order. Here's everything you need to know to go from idea to live listing.
Step 1: Choose a Profitable Niche
The single biggest factor in whether your coloring book sells is the niche you choose. A generic "flowers" coloring book competes with thousands of titles. A "Gothic Garden Botanical for Witchy Adults" book has far less competition and a passionate audience actively searching for it.
Use a niche research tool like Chromio's Niche Generator to surface ideas with strong Amazon demand. Focus on:
- Sub-niches with passion communities — cat lovers, crystal collectors, mindfulness practitioners
- Seasonal demand — Christmas mandalas, Halloween scenes, Valentine's Day patterns
- Age-specific audiences — toddler activity books, teen anime fans, seniors with large-print designs
Look for niches where the top 3 books have under 50,000 BSR (Best Seller Rank) but the page-one results aren't all dominated by major publishers.
Step 2: Generate Your Coloring Pages
Each interior page should be a clean, print-ready black and white line art image at 300 DPI minimum. KDP's standard interior trim sizes for coloring books are:
- 8.5 × 11" — most popular, highest perceived value
- 8 × 10" — good for gift-format books
- 6 × 9" — trade paperback size, lower royalties but popular
Aim for 40–60 pages for a standard adult coloring book, or 24–32 pages for children's books. AI image generators like those built into Chromio can produce print-ready coloring pages from a text prompt in seconds.
Pro tip: Keep all pages consistent in style. If page 1 has thick lines and bold shapes, all 50 pages should match. Inconsistency is the number-one complaint in coloring book reviews.
Step 3: Add a Title Page and Copyright Page
Every KDP interior manuscript should start with:
1. Title page — book title, subtitle, and author name 2. Copyright page — "© 2025 [Your Name]. All rights reserved." plus a simple disclaimer
You can leave these minimal — most coloring book buyers barely notice them — but they're required for KDP approval.
Step 4: Compile Your Interior PDF
KDP requires a single PDF file for your interior. The PDF must:
- Match the exact trim size (e.g., 8.5 × 11")
- Have 0.125" bleed on all sides for full-bleed pages, or 0.25" margins for non-bleed
- Be submitted at 300 DPI for print quality
- Have no crop marks or printer marks
Chromio's PDF Compiler handles all of this automatically. Upload your PNGs, select your trim size, and download a KDP-ready PDF in one click.
Step 5: Design Your Cover
Your cover is your most important marketing asset. It's what sells the book before anyone opens it. KDP requires a full-wrap cover (front + spine + back) submitted as a single PNG or PDF file.
Key cover rules:
- Spine width is calculated by KDP based on your page count and paper type
- KDP overlays its own barcode on the back cover — leave the bottom-right corner blank
- Resolution must be at least 300 DPI
Use Chromio's Cover Creator to auto-calculate the correct dimensions and export a print-ready 300 DPI cover in minutes.
Step 6: Write Your KDP Listing
Your title, subtitle, description, and 7 keyword phrases directly determine whether Amazon's search algorithm shows your book to buyers. This is where most self-publishers leave significant money on the table.
A strong KDP listing includes:
- Title: Primary keyword first (e.g., "Cat Coloring Book for Adults")
- Subtitle: Secondary keywords and selling points ("50 Stress-Relief Designs for Mindful Relaxation")
- Description: 600 characters, uses A+ Content HTML if possible, focuses on buyer benefits
- 7 Keyword phrases: Long-tail phrases buyers actually search, not single words
Chromio's KDP Listing Generator writes all of this for you based on your niche in under 30 seconds.
Step 7: Publish on KDP
Go to kdp.amazon.com → Create → Paperback, then:
1. Enter your title, author name, and language 2. Set your trim size and upload your interior PDF 3. Upload your cover PNG 4. Set your price (most coloring books price at $7.99–$14.99) 5. Select "Expanded Distribution" to reach non-Amazon retailers
KDP review typically takes 24–72 hours. Once approved, your book is live on Amazon and you earn royalties on every copy sold — with zero ongoing work required.
Ready to publish your first coloring book? Start free with Chromio →