✦ COMPATIBLE WITH SD 1.5, SDXL & STABLE DIFFUSION 3 ✦
Stable Diffusion
Prompt Generator
Stable Diffusion gives you full control over AI image generation. Generate prompts with weights, art styles, artist references and negative prompts — get exactly what you imagine.
Generate my first prompt →10 free prompts per month · No credit card required
What is Stable Diffusion?
Stable Diffusion is the world's most widely used open-source AI image generation model. Originally developed by Stability AI, it comes in multiple versions: SD 1.5, SDXL and the latest Stable Diffusion 3.
Its open-source nature has created a massive ecosystem of specialized models (checkpoints), extensions (LoRA, ControlNet) and interfaces like AUTOMATIC1111, ComfyUI and Forge.
Stable Diffusion responds particularly well to prompts that include artist references, specific visual styles and prompt weights (using the (word:1.3) syntax). Promptnomicon automatically generates this type of technical prompt, including negative prompts to avoid common artifacts.
Stable Diffusion Prompt Examples
Generated with Promptnomicon — ready to use
a mystical library floating in clouds, (volumetric lighting:1.3), (god rays:1.2), fantasy art style, by Brom and Greg Rutkowski, intricate details, 8k uhd, artstation trending
Weight: volumetric ×1.3 · Artists: Brom, Rutkowski
beautiful sorceress casting spell, dynamic pose, (flowing magical energy:1.4), anime style, by Makoto Shinkai, detailed face, vivid colors, masterpiece, best quality Negative: (deformed:1.4), blurry, bad anatomy
Style: Anime · Negative prompt included
abandoned greenhouse overgrown with exotic plants, (golden hour light:1.3), dust particles, photorealistic, hyperdetailed, Sony A7III, 35mm lens, shallow dof, SDXL
Version: SDXL · Light: Golden hour
cyberpunk street food vendor, neon signs reflected in rain puddles, (atmospheric fog:1.2), cinematic composition, (by Syd Mead:0.8) (by Simon Stalenhag:0.9), concept art
Artist weights · Style: Cyberpunk
How Promptnomicon Works
01
Describe your idea
Write in plain language what you want to generate. No need to know weight syntax or artist names.
02
AI generates the technical prompt
Promptnomicon creates a prompt with optimized weights, style and artist references, plus a negative prompt to avoid the most common SD artifacts.
03
Use it in your favorite interface
Compatible with AUTOMATIC1111, ComfyUI, Forge, InvokeAI and any Stable Diffusion interface. Copy, paste and generate.
Frequently Asked Questions
Which Stable Diffusion versions are supported?
Prompts work with SD 1.5, SDXL and Stable Diffusion 3. Specify your version in the description and Promptnomicon will adapt the prompt syntax.
Do prompts include negative prompts?
Yes. For Stable Diffusion, Promptnomicon automatically generates an optimized negative prompt to avoid common artifacts like deformations, blurriness and incorrect anatomy.
What are prompt weights in Stable Diffusion?
Weights (syntax: word:1.3) tell the model how much emphasis to place on each element. Promptnomicon adds them automatically where they have the most impact.
Does it work with custom models (checkpoints)?
Yes. Generated prompts are compatible with any SD-based checkpoint, including models from Civitai like Realistic Vision, DreamShaper or any anime model.
Start Creating with Stable Diffusion
10 free prompts every month. No credit card required.
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