Free AI image prompt generator Write a detailed AI prompt for any AI image generator

This free AI image prompt generator turns your idea into a detailed AI prompt for creating images using ChatGPT, Copilot, Midjourney or Firefly. Built for creative and marketing teams, it runs in your browser without calling any AI model. Founderz made it; our Certificate Program in Artificial Intelligence and Innovation teaches image generation.

Universal AI image prompt generator

Create a prompt for any image: portraits, products, ads, social posts, illustration or editing, in the exact format your tool expects. Only step 1 is required.

How to use our AI image prompt generator

It’s intuitive, but here’s what each step does. Only the first step is required: anything you skip stays on Auto.

1. Give it the essentials. Pick an example (Professional portrait, E-commerce product, Meta ad, Brand system, Concept art or Edit an image) or write what you want to see in the image. Then choose what you’re creating and which tool you’ll use: ChatGPT, Gemini, Midjourney, Adobe Firefly, Microsoft Copilot, Stable Diffusion and more.
2. Set the scene and style. The action and setting (optional), the image type, the look and the lighting. The advanced settings cover the background and palette, and for portraits, the style and expression.
3. Choose the use and format. Where it will be used and, for ads and social posts, the campaign goal, the call to action, the text area and the exact headline. The advanced settings cover the aspect ratio and the brand treatment.
4. Control the camera. Framing, lens, depth of field and composition. The advanced settings cover the reference image, consistency across images, what to avoid and the finish.
5. Generate and copy your prompt. Click “Generate prompt”, enter your email to see the whole prompt and copy it.

You don’t need technical vocabulary: write the scene in plain words and the form puts it in order. Pick your tool under “Which tool?”, because the prompt adapts its format to it.

Example: generating a prompt for a new image

With the generator’s “E-commerce product” example, this is the full prompt:

Create a photograph: matte black smartwatch, on a light stone pedestal. Setting: minimalist studio.

Product: shape, color, materials and label true to the original, with no distortion and no invented text on the packaging. Looks like a real photograph taken with a professional camera: fine grain, believable physical light and precise focus. Quiet luxury style: refined surfaces, controlled reflections and a sense of calm. Lighting: clean studio light with a large key light and soft fill, no hard shadows. Plain, even white background, suitable for a catalog. For a product page: product centered, filling about 80% of the frame, on a clean background. The product or packaging is the clear hero and is shown in full. Clean framing with the subject as a clear focal point and nothing important cut off at the edges. Camera: macro lens to show the texture and detail of the material. Consistency: the product must be identical in every variation, with no changes in shape or detail. Professional, sharp finish with no artifacts or blurry areas. Format: 1:1 aspect ratio, for a product page.

Avoid: illegible or invented text, watermarks and distorted objects.

Each sentence turns one choice in the form into an instruction: a product true to the original, the style, the light, the background, the camera, the format and, at the end, what to avoid.

The result: the image tool gets a concrete brief instead of loose adjectives, and the image comes out ready for a product page.

Tips for better AI-generated images

Use cases: generate prompts for every kind of image generation

The form has its own fields for the jobs creative teams most often hand to AI, so you can create visuals with AI without remembering every detail:

• Product and e-commerce Clean product shots, packaging mockups, a transparent background for a PNG cutout, and variations that keep the product identical.
• Ads and campaigns The goal, the call to action, a free area for copy and the headline, with formats for Meta, LinkedIn or display.
• Portraits The portrait direction and expression, from a corporate profile picture to a more creative look.
• Brand and social A consistent style and palette across pieces, so you can create a full series.
• Illustration and concept work Different art styles such as epic fantasy, retro futuristic, isometric or cinematic.
• Editing Change the background, expand the canvas or remove an object from an image you already have.

What makes a good AI prompt for an AI image generator

A good text prompt describes seven visual elements: subject, style, composition, lighting, color, format and constraints. If you only have time for three, prioritize subject, lighting and format, because they change a product shot or a portrait the most.

The more specific each one is, the easier it is to get high-quality images and repeat the same visual style across a series. Spelling out each element is the core of prompt engineering and of a repeatable creative process: writing a reusable prompt that another person, or the AI itself, can follow.

More free AI image prompts ready to use

If you would rather start from finished examples, the prompt library in our guide to AI image prompts has templates for products, portraits, ads, logos and editing.

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More Founderz prompt generators

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Why I built these generators

Frequently asked questions

Is this free AI image prompt generator really free?

Yes, it’s free. Before it asks for anything, it shows you a preview with the first sections of the prompt. To see the whole prompt and copy it, enter your email and accept the Privacy Policy; receiving communications from Founderz is optional.

It only asks once per visit: any prompts you generate after that are shown in full.

Which AI tools does it support, from ChatGPT to Flux?

The “Which tool?” field covers ChatGPT, Gemini, Midjourney, Adobe Firefly, Microsoft Copilot, Stable Diffusion, Leonardo AI, Flux, Ideogram, Canva and Photoshop, and the prompt adapts its format to the one you pick.

Is it a free image to prompt generator?

No. This is not an image to prompt tool: it doesn’t convert image files or turn any photo into text, so it won’t work as an AI image to prompt generator or an image-to-text service.

It starts from your description. To change an image you already have, choose “Edit an image” under “What are you creating?”, pick what you want to change and paste the prompt with the image into your editing tool, such as Copilot or Photoshop.

What language does the prompt come out in?

In English, ready to paste into any of the image tools in the list.

Last updated: October 26, 2026