What this tool does
The Stable Diffusion Prompt Generator writes in the dialect SD understands: weighted keywords, quality tags, and a proper negative prompt to keep hands, faces, and backgrounds clean.
Use it with Automatic1111, ComfyUI, or any SD frontend — the prompt structure ports across them all.
Stable Diffusion rewards the tinkerers — the ones who will run forty variations to find the perfect seed. This generator gives tinkerers better raw material: properly weighted positives, thoughtful negatives, and the quality tags that separate crisp renders from mushy ones. It is the difference between gambling and experimenting. The best SD artists treat prompting like lab work: hypothesis, test, record, repeat.
The open-source community around it means new techniques surface weekly — stay curious.
See it in action
You type: a cyberpunk street market
You get a prompt like: “Positive: cyberpunk night market, neon signs reflecting on wet asphalt, dense crowds, steam rising from food stalls, (intricate details:1.2), cinematic lighting, 8k. Negative: blurry, deformed, watermark, text, low quality.”
How to use it
- Describe the image with comma-separated phrases.
- Add quality tags: masterpiece, detailed, sharp focus.
- List what to exclude in the negative prompt.
- Generate, copy both blocks, and run.
Tips for better results
- Parentheses add weight: (detailed face:1.2) emphasizes.
- Keep positives focused; every extra tag dilutes the rest.
- Negative prompts need “deformed, blurry, watermark” basics.
- Sampler and steps belong in your UI, not the prompt.
- Save prompt + seed pairs that work; reproducibility is gold.
- Change one variable at a time or you will never know what worked.
- Join a community and compare notes — SD is a team sport.
Frequently asked questions
What is a negative prompt?
A second text box listing what you do NOT want — it steers the model away from common flaws.
Do weights really work?
Yes — (word:1.3) strengthens a concept; [word] weakens it in most SD frontends.
Which checkpoint should I use?
Match the checkpoint to your goal: realism, anime, or stylized — the prompt adapts either way.
Can I use these in ComfyUI?
Yes — paste the positive and negative blocks into the CLIP nodes.
Is it free?
Yes, free to use.