Pick model + sampler, adjust Steps / CFG sliders (these aren't embedded in the prompt — they're sidebar controls in your SD UI)
Paste positive into Automatic1111, ComfyUI, or fal.ai; paste negative into the negative prompt box; mirror model / sampler / steps / cfg in the UI sidebar.
FAQ
Q01Is this generator free? Do I need an account?+
Completely free, runs in your browser (no API calls, nothing stored). No signup — open and use.
Q02How does Stable Diffusion differ from Flux / Midjourney?+
All three are image generators, but SD is the actual open-source ecosystem — you can run it locally (ComfyUI / Automatic1111), download LoRAs / checkpoints for style specialisation, and chain ControlNet for composition control. Flux is also open but SD's surrounding ecosystem is older and deeper. MJ is closed-source SaaS. SD fits advanced users who want self-hosting, fine control, or LoRA workflows.
Q03Why split into Positive and Negative prompt sections?+
SD models learn 'what to draw' AND 'what to avoid'. Negative prompt isn't 'not mentioning' — it's explicitly telling the model to actively avoid. Want clean hands? Put 'deformed hands, extra fingers' in negative; the model actively suppresses them. Flux / MJ don't have this field (different architecture).
Q04How should I set Steps / CFG / Sampler?+
Steps (denoising iterations) 20–40 is standard; Turbo / Lightning models 4–8. CFG Scale (prompt adherence) 5–7 for photorealism, 7–9 for illustration; >10 risks oversaturation. Sampler defaults to DPM++ 2M Karras (broadest quality); LCM is fastest but needs LoRA support.
Q05Which model should I pick — SDXL / SD 3.5 Large / SD 1.5?+
SDXL 1.0 is the current general-purpose default; SD 3.5 Large is Stability's newest (late 2024), best at text-in-image; SD 1.5 is the lightweight classic with the deepest LoRA library on Civitai. Turbo / Lightning are reduced-step variants of SDXL. Start with SDXL 1.0.
Q06Why aren't model / sampler / steps / cfg in the copied string?+
Every SD UI (Automatic1111 / ComfyUI / Forge / fal.ai / RunPod) handles those as sidebar controls, not prompt content. We surface them in the preview as a 'Recommended settings' block so you can mirror them in your platform's UI.
Q07Why ≤ 350 chars recommended for positive prompt?+
SD uses CLIP / OpenCLIP / T5 for text embedding; these weight the first 75 tokens highest, with later tokens fading. Within 350 chars almost everything gets through. To emphasise a token use the (word:1.5) weight syntax (supported in Automatic1111, partial in ComfyUI) — we don't expose this UI yet; you can hand-edit the copied string.