Our prompt generator lives on the ArtPrompts Generator home page. It is a free tool that helps you assemble a well-structured prompt for any AI image model — Midjourney, Stable Diffusion, DALL·E, Flux or Niji — without staring at a blank box. This guide walks you through using it and getting the most out of what it produces.

What the generator does

Good prompts tend to share a shape: a clear subject, a defined style, some direction on lighting and composition, and the right technical parameters for your model. The generator gives you that shape as a set of fields to fill in, then stitches your choices into a clean, copy-ready prompt. Think of it as a scaffold for your idea rather than a machine that invents the idea for you — you stay in control of every part.

Step by step

  • Start with your subject. Describe the main thing you want to see, as concretely as you can. “A red fox” is a start; “a red fox curled asleep in autumn leaves” gives the model far more to work with.
  • Choose a style or medium. Photography, oil painting, watercolour, 3D render, line art — the style keyword steers the whole look. Pick one primary direction rather than stacking five competing ones.
  • Set the mood and lighting. Words like “golden hour,” “soft diffused light” or “dramatic rim lighting” change the emotional register of an image more than almost anything else.
  • Add composition cues. Framing and camera language — “close-up,” “wide shot,” “low angle,” “rule of thirds” — tell the model how to arrange the scene.
  • Set model parameters. Depending on the model, this is where aspect ratio, stylize strength, or a seed come in. If a term is new to you, our prompt glossary defines them.
  • Copy and generate. Copy the assembled prompt into your chosen model and generate. Then iterate.

Tips for better results

A few things we have learned from testing (see How We Test):

  • Change one thing at a time. If you rewrite the whole prompt between runs, you won’t know what caused a change. Adjust a single element and compare.
  • Don’t over-stuff. Piling on twenty adjectives usually dilutes the result. A focused prompt beats a crowded one.
  • Match the prompt to the model. DALL·E responds well to plain natural language; Midjourney and Stable Diffusion often reward more keyword-driven phrasing. The generator gives you a solid base — tune it to your model.
  • Generate more than one image. Because these models are random, judge a prompt on several outputs, not a single unlucky one.

Editing the output

The generated prompt is a starting point, not a final answer. Treat it as an editable draft: add the detail you care about, remove anything that fights your intent, and re-order elements to shift emphasis. The best prompts usually come after a few rounds of tweaking.

A note on results

No prompt guarantees a specific image — results vary by model, version and the luck of the seed (see our disclaimer). The generator’s job is to give you a strong, well-formed prompt so that the odds are on your side. If you build something you love, or hit a wall you can’t get past, we would enjoy hearing about it via our contact page.