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Stable Diffusion Prompt Generator

Turn a rough idea into an expert prompt for Stable Diffusion — free. Describe what you want, answer a few quick questions, and PromptDonkey writes the prompt you meant to ask.

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No account needed for your first prompt.

What is Stable Diffusion?

Stable Diffusion is the leading open-source image model family — run it locally, on cloud services, or through countless apps, with unmatched control via fine-tuned models, LoRAs, and negative prompts. You can try it at stability.ai.

Why prompt quality matters in Stable Diffusion

Open-source freedom means more knobs: positive prompt, negative prompt, model choice, samplers. A structured description of what you actually want is the anchor that keeps all those knobs pointed in one direction.

How PromptDonkey works with Stable Diffusion

1. DescribeTell PromptDonkey what you want in plain English — rough ideas are fine.

2. AnswerTap through a few yes/no questions that capture audience, tone, format, and constraints.

3. Paste into Stable DiffusionCopy the finished prompt — there's a one-click export formatted for Stable Diffusion.

Stable Diffusion prompting tips that actually move results

Front-load important tokens — early words carry more weight in most SD pipelines.
Use the negative prompt deliberately (artifacts, extra fingers, text) instead of cramming “not X” into the positive.
Match your prompt style to your checkpoint: photorealistic models want camera language, anime models want tags.
Keep a seed when iterating so you can attribute changes to your prompt edits.

Example: from idea to Stable Diffusion-ready prompt

You type into PromptDonkey

"Product photo of a handmade candle for my shop"

You paste into Stable Diffusion (excerpt)

Artisan soy candle in amber glass jar, on rustic wood table, soft window light, minimalist styling, photorealistic product photography, 50mm, f/2.8
Negative: text, watermark, blurry, extra objects

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Frequently asked questions

Which Stable Diffusion service should I use?

Local (AUTOMATIC1111/ComfyUI) for control, or hosted services for convenience — your PromptDonkey prompt works in any of them.

Does PromptDonkey write negative prompts?

The Flux/Stable Diffusion export focuses your description into generation-ready language; add the negative-prompt staples of your chosen model — our tips above list the common ones.

Is Stable Diffusion free?

The models are open source; running them is free locally if you have a GPU, or low-cost via hosted services.

Related guides

MidjourneyAI Image Generators FluxAI Image Generators Leonardo AIAI Image Generators IdeogramAI Image Generators

See all 20 platform guides →

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