How to Create Coloring Pages Using Google Gemini

Coloring pages are fun for kids and adults alike. They help with relaxation, creativity, and learning. But finding the right ones can be time-consuming.

Good news is that you can now make custom coloring pages in seconds using Google Gemini. No design skills needed.

Why I Use Gemini for This

I’ve been creating coloring pages with Gemini’s nano banana pro model, and the results are impressive. It generates clean line art that’s perfect for printing. The images come out crisp with bold outlines and no messy shading.

How to Get Started

Here’s what you need to do:

Go to gemini.google.com or open the Gemini app on your phone. Start a new conversation. Click on the model picker and select ‘Pro’. That’s it. You’re ready to create.

The Prompt Template That Works

After testing different approaches, I found a prompt structure that gives consistent results. Here it is:

Create a black and white coloring page illustration of [main subject] in a clean, printable coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clear separation between all elements for easy coloring. The subject should be shown [pose or action], with a simple and balanced composition and [brief background description] that does not overpower the main subject. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should appear neat and professional when printed. Generate the image in high resolution, vertical layout, and use an aspect ratio of [4:5 or 3:4]

Just fill in the brackets with what you want, and you’ll get a coloring page ready to print.

Real Examples You Can Try

Let me show you some prompts I’ve used successfully:

Princess Coloring Page: Create a black and white coloring page illustration of a princess wearing a long gown in a clean, printable coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clear separation between all elements for easy coloring. The princess should be standing gracefully with her hands together, and the background should include simple castle shapes and stars without overpowering the main subject. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should appear neat and professional when printed. Generate the image in high resolution, vertical layout, and use an aspect ratio of 4:5.

Friendly Robot: Create a black and white coloring page illustration of a friendly robot waving in a clean, printable coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clear separation between all elements for easy coloring. The robot should be standing upright with one arm raised, and the background should include simple gears, stars, and floor lines without overpowering the main subject. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should appear neat and professional when printed. Generate the image in high resolution, vertical layout, and use an aspect ratio of 4:5.

Mandala Pattern: Create a black and white coloring page illustration of an intricate mandala with symmetrical floral patterns in a clean, printable adult coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clearly enclosed sections for detailed coloring. The mandala should be centered and perfectly balanced, with repeating geometric and organic shapes that feel calming and meditative. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should print cleanly. Generate the image in high resolution, vertical layout, and use an aspect ratio of 4:5.

Cute Cat: Create a black and white coloring page illustration of a cute cat sitting on a window sill in a clean, printable coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clear separation between all elements for easy coloring. The cat should be sitting calmly with its tail curled, and the background should include a simple window frame, potted plants, and clouds outside without overpowering the main subject. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should appear neat and professional when printed. Generate the image in high resolution, vertical layout, and use an aspect ratio of 4:5.

Smiling Dinosaur: Create a black and white coloring page illustration of a smiling dinosaur standing in a prehistoric forest in a clean, printable coloring book style. The image should use pure line art with smooth, bold black outlines on a white background, with clear separation between all elements for easy coloring. The dinosaur should be standing upright with small arms raised, and the background should include simple trees, rocks, and clouds without overpowering the main subject. Do not include any shading, gradients, grayscale, textures, or color of any kind. The illustration should have no text, letters, numbers, logos, or watermarks and should appear neat and professional when printed. Generate the image in high resolution, vertical layout, and use an aspect ratio of 4:5.

What to Do With Your Coloring Pages

Once you’ve created your images, you have plenty of options:

Print them at home for personal use. Kids love having custom pages featuring their favorite characters or themes.

Create a coloring book for gifts. Make a collection of related images and bind them together.

Use them for educational purposes. Teachers can create themed coloring pages that match their lesson plans.

Sell them online. If you create unique designs, you can offer them as digital downloads on platforms like Etsy.

Share them with your community. Parent groups, senior centers, and therapy programs often need coloring materials.

The best part is that you can create as many variations as you want. Try different subjects, poses, and backgrounds until you get exactly what you need.

Start simple with basic subjects, then work your way up to more complex designs. You’ll be surprised at how quickly you can build a whole library of custom coloring pages.