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A Beginner's Guide to AI Image Generators

What AI image generators can do, which one to choose, and how to write prompts that get great results.

October 24, 2026 · 7 min read

AI image generators turn a text description into a picture in seconds. They’re useful for social posts, blog headers, presentations, and creative projects, even if you can’t draw.

Which tool should you start with?

  • Adobe Firefly: a good choice for business use, and built into Photoshop.
  • Midjourney: beautiful, artistic results. Paid only.
  • Ideogram: the best choice when you need readable text in the image, such as posters or thumbnails.
  • ChatGPT and Gemini: convenient if you already use them, since you can create images right in the chat.

How to write a good prompt

A strong prompt describes four things:

  1. Subject: what’s in the image (“a golden retriever wearing headphones”)
  2. Setting: where it is (“in a cozy home studio”)
  3. Style: how it looks (“soft watercolor illustration” or “realistic photo”)
  4. Mood and lighting: “warm morning light, calm and cheerful”

Put together:

A golden retriever wearing headphones in a cozy home studio, soft watercolor illustration, warm morning light, calm and cheerful.

Tips for better results

  • Iterate. Your first result is rarely the best. Change one detail at a time.
  • Name the format. Add “wide banner,” “square,” or “vertical phone wallpaper.”
  • Be specific about style. “Flat vector illustration” gives a very different result from “cinematic photo.”

Use images responsibly

  • Don’t create images of real people in misleading situations.
  • Check each tool’s license before using images commercially.
  • Say when an image is AI-generated if your audience would care.

Start with something fun, experiment freely, and you’ll quickly get a feel for what each tool does best.