Free AI Image Prompt Generator
Describe the image you want — subject, style, lighting, composition — and Promptivo builds a detailed prompt in the exact format your image model expects, from Midjourney’s flags to Stable Diffusion’s negative prompt.
What is an AI image prompt generator?
An AI image prompt generator turns a plain description of the picture you want into a detailed, well-ordered prompt for an image model. The hard part isn’t the idea — it’s knowing which details to include (style, lens, lighting, aspect ratio, what to exclude) and how to phrase them for each model. Promptivo asks the right questions and formats the result for the tool you actually use.
Formatted for every major model
- Midjourney
- DALL·E 3
- Stable Diffusion
- Flux
- Gemini (Nano Banana)
- Ideogram
- Leonardo
Questions, answered
What is an AI image prompt generator?
An AI image prompt generator turns a description of the picture you want into a detailed, well-structured prompt for an image model like Midjourney or DALL·E. Promptivo interviews you about the subject, style, lighting, composition, and aspect ratio, then assembles a prompt in your chosen model's exact format.
Which image models does it support?
Midjourney, DALL·E 3, Stable Diffusion, Flux, Gemini (Nano Banana), Ideogram, and Leonardo. Each gets its own syntax — Midjourney's --ar/--v flags, Stable Diffusion's negative prompt, natural-language prose for DALL·E and Flux, and so on.
Is it free?
Yes. The image prompt generator is free and needs no account — describe your image, pick a model, and copy the prompt.
What's a negative prompt?
A list of things you don't want in the image (text, watermarks, extra fingers, blur). Models like Stable Diffusion take it as a separate field; Promptivo formats your exclusions the right way for each model.
Describe it. We’ll prompt it.
Free, no account. Answer a few questions and copy a model-ready image prompt.
Start free →