The prompt enhancer for image generation
The gap between 'a cool logo' and the image you pictured is a prompt problem. PromptAI turns a rough idea into a structured image prompt — subject, style, composition, lighting, and constraints — that transfers to Midjourney, DALL-E, Nano Banana, Stable Diffusion, and any other image model.
Free to try, no login. The Chrome extension works wherever you prompt in the browser — ChatGPT image generation, Gemini, Copilot, and any web-based image tool with a text input.
Try it on an image idea right now — type a rough concept and see the structured prompt it builds.
What is a prompt enhancer for image generation?
An image prompt enhancer rewrites a rough visual idea into the structured description image models respond to. Models don't read your mind about style or mood — everything you don't specify gets filled in with the model's generic defaults. That's why unspecified prompts converge on the same over-lit, over-smooth AI look. The enhancer adds what you didn't think to write: the subject with specifics, the artistic style or medium, composition and framing, lighting, color palette, and what to avoid.
The same structure transfers across models. Midjourney, DALL-E and GPT-5.2's image generation, Google's Nano Banana (Gemini image generation), and Stable Diffusion each have their own syntax quirks, but all of them reward the identical core: a specific subject, a named style, explicit composition, and defined lighting. Enhance once, then paste the result into whichever tool you're using — including ComfyUI workflows, where a well-structured positive prompt is the starting point.
PromptAI's Chrome extension puts this one click away in the tools where you already generate images in the browser — ChatGPT, Gemini, Copilot — and the free widget on this page works with no install for everything else.
One structure, every image model
Model syntax differs; what makes an image prompt good doesn't. The enhancer writes the structure, you paste it where you work.
ChatGPT and DALL-E images
Image generation inside chatgpt.com is conversational, which hides how much specificity helps. An enhanced prompt with composition and lighting beats three rounds of 'make it more dramatic'.
Gemini and Nano Banana
Gemini's image generation responds strongly to photographic language — lens, lighting, and framing terms. The enhancer includes them; the extension works directly inside gemini.google.com.
Midjourney and Stable Diffusion
Keyword-driven models reward dense, ordered descriptors: subject first, then style, composition, lighting, palette. Enhance here, paste into Discord or your Stable Diffusion UI — the structure carries.
ComfyUI workflows and video prompts
A structured positive prompt is the anchor of any ComfyUI workflow, and video models (Sora, Veo) add motion and camera direction to the same skeleton. The enhanced output gives you both a base to build on.
Before and after: real image generation prompts
Logo concept
a cool minimalist logo for my coffee brand
A minimalist logo mark for a specialty coffee brand called 'Ridgeline'. Subject: an abstract mountain ridge formed by the steam line rising from a coffee cup, single continuous stroke. Style: flat vector, geometric, Scandinavian minimalism. Composition: centered mark, generous negative space, works in a circle badge. Colors: deep forest green and warm cream, two colors only. Constraints: no text in the mark, no gradients, no clip-art coffee beans, must stay legible at 32px favicon size.
Photorealistic scene
a cozy cabin in the woods in winter
Photorealistic winter scene: a small timber cabin at the edge of a snow-covered pine forest at blue hour, warm yellow light glowing from two windows, thin smoke from the chimney. Composition: wide shot, cabin in the right third, footprints leading toward the door as a leading line. Lighting: soft dusk light, warm interior glow contrasting cold blue snow. Camera: 35mm lens, f/2.8, slight depth of field. Mood: quiet, inviting, slightly nostalgic. Avoid: HDR over-processing, oversaturation, lens flare.
Product mockup
product shot of my skincare bottle
Studio product photograph of a frosted glass skincare serum bottle with a bamboo cap. Composition: bottle centered on a low travertine stone pedestal, shot at eye level. Lighting: soft diffused key light from the left, subtle rim light separating the bottle from the background, gentle shadow falling right. Background: warm off-white seamless, slightly out of focus. Style: premium minimalist beauty photography, like a high-end cosmetics campaign. Avoid: harsh reflections, busy props, visible text on the label.
Set up in under a minute
Describe the image roughly
Type the idea the way you'd describe it to a friend — subject and vibe is enough. Use the widget above or the extension in your AI chat.
Enhance
One click adds the specifics models need: style, composition, lighting, palette, and the things to avoid.
Paste into your image tool
The structure transfers — Midjourney, DALL-E, Nano Banana, Stable Diffusion, or ComfyUI. Tweak the details, generate, and iterate from a strong base.
Frequently asked questions
What is a prompt enhancer for image generation?
A tool that rewrites a rough visual idea into a structured image prompt — specific subject, artistic style, composition, lighting, color palette, and negative constraints. Image models fill every unspecified detail with generic defaults, so the structure is what separates the image you pictured from the generic AI look. PromptAI does this in one click, free to try with no login.
Does it work with Midjourney and Stable Diffusion?
Yes, by design: the enhanced prompt is structured description, which is exactly what keyword-driven models consume. Enhance your idea in the widget or extension, then paste the result into Midjourney's Discord, your Stable Diffusion UI, or a ComfyUI text node. Model-specific flags (aspect ratio, quality parameters) stay yours to add.
Does it work with Nano Banana (Gemini image generation)?
Yes. The Chrome extension works directly inside gemini.google.com, where Nano Banana generates images — type your idea, click enhance, and send. Gemini's image model responds especially well to the photographic language (lens, lighting, framing) the enhancer includes.
What makes an image prompt 'good'?
Specificity in five areas: a concrete subject (not 'a landscape' but what, where, when), a named style or medium, composition and framing, lighting, and explicit exclusions. Every one you leave out, the model fills with its statistical average — which is why vague prompts from different people all produce the same-looking images.
Can it enhance video generation prompts too?
Yes. Video prompts for models like Sora and Veo use the same skeleton — subject, style, composition, lighting — plus motion and camera direction. Describe the shot including what moves and how, and the enhancer structures it; the result works as a video prompt or as the base for one.
Is there a free image prompt enhancer?
Yes — the widget on this page is free with no login. The Chrome extension is free to install with a 5-day trial for new accounts, and paid plans start at $7.99/month for unlimited enhancements.
Does PromptAI generate the images?
No — it makes the prompt, your image tool makes the image. That separation is the point: one enhancer that works with every image model you use, instead of a different prompting tool locked inside each one.
Related reading
Try it on your next image generation prompt
Free to try, no login. The Chrome extension works wherever you prompt in the browser — ChatGPT image generation, Gemini, Copilot, and any web-based image tool with a text input.