Just a note: You can use - Google Gemini, Chat GPT, Claude etc. to generate images but you will only get maybe 2-10 images before you are told you have to wait for several hours or day or so before using it again. NOT my first choice.

Starting off Clean with my all time favorite:

You are limited to so many credits in a period of time. But trust me. You will be happy to take a break and let that refresh. I usually can get a dozen images before it says to come back later. Usually a few hours.

Google Ai studio.

To keep it completely FREE. Follow the below directions when using it.

This is what the initial page looks like once you have signed up

Step One: Click on the area circled in red: The Playground

That brings up the next screen. as you can see, you can do many things here. But today, for this (coloring book page creation), we are clicking on the Image creation circled in BLUE

It will pop up with this screen.

If you want FREE, click on the bottom one: Just plain ole' Nano Banana

Scroll down to bottom of the page and you will see this. This is where you type in / or / copy and paste in your Text prompt.

Over to the right, you need to set the page size. For this site, it doesn't matter what page size you set in creating the PROMPT at RLB Designs, you still have to choose a page size here. For Portrait (8.5x11) 3:4, 4:5 usually works out best.

Paste your prompt in, then click on the RUN button.

After you hit run, it thinks for a few seconds and this is what it outputs.

To save the picture. HOVER your mouse over the Coloring page. At the bottom of the page you will get the option to save to your computer.

Just an FYI: If you want to tweak the text yourself Here's how you do it in Google ai studio

At the top of the page where your text prompt appears, hover your mouse over the corner and these pop up. The pencil, the google symbal and the three dots. Click the Pencil: change your text, then click the green arrow. You will need to click the blue diamond sybol to Rerun the prompt for a new page.