The digital printables market — especially on platforms like Etsy, Teachers Pay Teachers, and Amazon KDP — is booming. People are constantly searching for unique, themed coloring activities for kids, classrooms, and adult relaxation. With a tool like ColorByNumber.art, you can quickly generate original color-by-number pages to build and sell your own digital products.
This guide walks you through the basics of choosing a niche, generating high-quality pages, and preparing your files for sale.
1. Choose a profitable niche
The secret to selling printables is getting specific. Instead of selling a generic "animals" pack, target a specific audience or occasion.
Top niches for kids
- Specific animals: Dinosaurs, sharks, farm animals, or unicorns.
- Educational: Back-to-school routines, community helpers, simple math scenes.
- Holidays: Halloween monsters, Valentine's cards, Thanksgiving scenes.
Top niches for adults
- Relaxation: Mandalas, geometric patterns, zen gardens.
- Hobbies: Vintage cars, gardening scenes, coffee and books.
- Travel: Famous cityscapes or tropical beaches.
2. Source your base images carefully
When creating products to sell, you must have the legal right to use the original images. You cannot simply download photos from Google Images and convert them.
Safe ways to get images:
- Take your own photos: The safest and most original method.
- Draw your own sketches: Digitise them and run them through the tool.
- Use public domain images: Sites like Unsplash, Pexels, or Pixabay offer free-to-use images (always double-check the commercial licence).
- Buy commercial-use clipart: Purchase bundles from sites like Creative Market.
3. Generate and batch your pages
Buyers usually want bundles, not single pages. A pack of 10 to 20 themed pages is a standard digital product size.
The batching process:
- Gather 10 related photos (e.g., 10 different dog breeds).
- Edit them so they have similar lighting and simple backgrounds.
- Upload to ColorByNumber.art and keep your settings consistent (e.g., all 12 colors, medium detail).
- Generate and download each page as a high-resolution PNG or SVG.
Consistency makes your bundle look like a cohesive, professional product.
4. Design your color keys and instructions
If your tool provides a color key, great! If you want to make it look more premium, you can add your own finishing touches.
What to include:
- A clear, easy-to-read color palette at the bottom of each page.
- A cover page for your bundle with a catchy title (e.g., "Zen Gardens: 15 Adult Color-By-Number Pages").
- A brief "How to Use" or "Tips for Printing" page to help your customers get the best results.
You can use free tools like Canva to combine your generated pages, add titles, and create a single PDF file for the buyer to download.
5. Perform quality control checks
Before listing your product, print out at least two pages from your bundle yourself to test them.
Check for:
- Legibility: Are the numbers too small to read when printed?
- Detail: Are there too many microscopic sections that are frustrating to color?
- Ink usage: Are the lines too thick, or is there a huge amount of solid black space that will drain a customer's printer?
Adjust your settings in the generator and re-download if the print test fails.
6. Create attractive listing images
People buy with their eyes. Your main listing image needs to show exactly what the customer is getting.
Listing image checklist:
- Use mockups (digital templates that make your flat file look like a real printed page on a desk).
- Show one page fully colored in so buyers know what the finished product looks like.
- Include a graphic that says exactly what is included (e.g., "Includes 15 High-Res PDF Pages").
7. List and price your product
Upload your combined PDF to your chosen platform. Digital printables are generally priced on volume and complexity.
- Small packs (5–10 pages): Usually sell for $2.00–$4.00.
- Large packs (20+ pages): Usually sell for $5.00–$8.00.
- Amazon KDP: Compiling 50+ pages into a physical paperback book typically ranges from $6.99–$12.99.
Write a clear description including the file format (PDF), paper size (8.5×11 inches or A4), and a note that it is a "Digital Download — No physical item will be shipped."
Start small and scale
Don't try to build a 50-page book for your first project. Start by creating a simple 5-page themed pack using ColorByNumber.art. Get comfortable with the process of generating, testing, combining into a PDF, and creating a listing image. Once you have the workflow down, you can create new products in an afternoon.