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FLUX Prompt Generator
Describe your task in plain words and get an engineered FLUX prompt — a natural-language scene description. Switch to any of 32 AIs to see the same request rewritten for that model. Free, private and instant.
FLUX prompt generator
FLUX · natural
Create an image of an elderly fisherman mending nets on a wooden pier, set in a natural environment that suits the subject. Style: photorealistic, high detail, shot on a 50mm lens. Lighting: soft natural light. Composition: rule of thirds, shallow depth of field. Mood: authentic and calm. Details: early-morning mist, muted blue tones. It will be used for an editorial magazine feature, so use a 3:2 aspect ratio. Keep the frame clean and uncluttered.
452 chars · ~113 tokens
Open FLUX
- ›FLUX understands long natural-language descriptions — write it like a photo brief.
- ›There is no negative prompt: describe what you want instead of what you don't.
- ›Put text in quotes for legible typography.
How the FLUX prompt is structured
FLUX understands full sentences, so the prompt reads like a photographer's brief: subject, setting, lighting, composition, mood and where the image will be used.
Every prompt is built from the same modular parts — role, task, context (your audience and details) and output format — then rendered in the style each AI follows best. Change the AI in the drop-down and the same request is rewritten instantly.
FLUX prompting tips
- FLUX understands long natural-language descriptions — write it like a photo brief.
- There is no negative prompt: describe what you want instead of what you don't.
- Put text in quotes for legible typography.
Ready-made prompt types
Choose a prompt type for your task; each comes with an expert role, context rules and an output format:
- Photorealistic image — for example “an elderly fisherman mending nets on a wooden pier”.
- Illustration / concept art — for example “a floating city above the clouds at sunset”.
Example output for FLUX:
Create an image of an elderly fisherman mending nets on a wooden pier, set in a natural environment that suits the subject. Style: photorealistic, high detail, shot on a 50mm lens. Lighting: soft natural light. Composition: rule of thirds, shallow depth of field. Mood: authentic and calm. Details: early-morning mist, muted blue tones. It will be used for an editorial magazine feature, so use a 3:2 aspect ratio. Keep the frame clean and uncluttered.
AI image tools compared
| AI | Made by | Prompt style |
|---|---|---|
| FLUX | Black Forest Labs | a natural-language scene description |
| Midjourney | Midjourney | comma-separated descriptors plus Midjourney parameters (--ar, --s, --no) |
| ChatGPT Images | OpenAI | a natural-language scene description |
| Gemini Image (Nano Banana) | a natural-language scene description | |
| Stable Diffusion | Stability AI | weighted tags, a negative prompt and suggested sampler settings |
| Ideogram | Ideogram | a description with quoted text, style and aspect-ratio settings |
| Leonardo AI | Leonardo.Ai | a natural-language scene description |
| Adobe Firefly | Adobe | a natural-language scene description |
Frequently asked questions
What is a FLUX prompt generator?
It turns a plain-language request into a structured prompt — role, task, context and output format — written the way FLUX follows best, so you get better answers on the first try.
Does this tool send my text to FLUX?
No. The prompt is assembled in your browser from templates. Nothing you type is sent to any server or AI until you paste it yourself.
Why does the prompt change when I switch AI?
Models are trained on different conventions: Claude responds well to XML tags, Gemini to Persona/Task/Context/Format, Midjourney to descriptors and --parameters, Suno to style tags and a lyric sheet. The generator rewrites the same request for each.
What if I leave a field empty?
The example shown in grey is used instead, so the prompt is always complete. Replace it with your own details for the best results.
Is the prompt generator free?
Yes — free, unlimited and no account needed.