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Negative Prompt Generator for Stable Diffusion, SDXL and Flux

Toggle the token chips that match the flaws you want gone, and this builder assembles a clean, comma-joined negative prompt you can paste straight into your image model.

Runs in your browser · nothing uploaded

Picking a model pre-checks a sensible starting set. You can add or remove any token after.

Anatomy fixes

Quality

Style exclusions

Watermarks and text

Face issues

0 tokens

A good negative prompt tells the model what to avoid: mangled hands, blurry output, stray watermarks, the wrong art style. This negative prompt generator for Stable Diffusion gives you grouped, ready-made tokens so you are not typing the same list from memory every session. Pick a model preset, keep the tokens that fit your render, and drop the ones that do not.

The presets matter because models read negatives differently. SD 1.5 leans on long negative prompt lists, SDXL needs far fewer, and Flux barely reads negatives at all, so each preset pre-checks a sensible starting set. Add your own comma separated tokens for anything specific, then copy the result. Everything runs in your browser, with no sign up and nothing uploaded.

How it works

  1. 1

    Pick your model

    Choose Stable Diffusion 1.5, SDXL, Pony, or Flux. Each preset pre-checks a starting set of tokens tuned to how that model responds to a negative prompt.

  2. 2

    Toggle the tokens

    Check or uncheck chips across anatomy fixes, quality, style exclusions, watermarks and text, and face issues. Use the All or None buttons per group, and add your own comma separated tokens in the box.

  3. 3

    Copy and paste

    Your combined negative prompt updates live as a comma-joined string. Hit copy and paste it into the negative prompt field of your image tool.

Questions about negative prompts

What is a good negative prompt for realistic images?
For realistic images, start with the SDXL or Pony preset and keep anatomy tokens like bad hands and extra fingers, quality tokens like blurry, lowres, and worst quality, plus text, watermark, and signature. Then add anything that keeps showing up in your bad renders, such as oversaturated or plastic skin.
How do I write a negative prompt list for SDXL?
SDXL needs a much shorter negative prompt than SD 1.5. Use the SDXL preset here, which checks only a handful of anatomy, quality, and watermark tokens. Long negative prompt lists can actually hurt SDXL output, so add tokens sparingly and test.
Does Flux use a negative prompt?
Flux largely ignores negative prompts at standard settings, since it is a guidance-distilled model. The Flux preset here stays minimal on purpose. If your interface exposes a real CFG or true guidance option, a short negative prompt can start to have an effect, but keep expectations low.
Is it free?
Yes. The negative prompt generator is free, needs no sign up, and runs entirely in your browser. Nothing you toggle or type is uploaded anywhere.

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