Free Negative Prompt Tool

Negative Prompt Generator

Tick the problems you want gone - bad hands, blurry, watermark - and copy a clean negative prompt for Stable Diffusion and SDXL. Free, no signup, nothing leaves your browser.

Your negative prompt0 terms
Nothing ticked yet. Hit a preset for a quick start, or check the boxes below.
Quick start:
A preset ticks a sensible set for that look. Then fine-tune by hand below.
FREE Want five positive prompts that already score 90+ to pair with these negatives? Get the free 5-Pack sent to your inbox. Email it to me →

Great images need a great positive prompt too

Your negative prompt clears the junk. The free 5-Pack is five hand-tuned positive prompts that hit every dimension, so the good stuff actually shows up.

Grab the free 5-Pack Stable Diffusion prompts → See the full Vault →

How it works

Three steps, all in your browser. Paste the result into any Stable Diffusion or SDXL tool.
1. Pick a presetPortrait, Realistic, Anime or Product loads a solid starting set.
2. Tick or untickAdd the exact problems you see: bad hands, watermark, blurry, plastic skin.
3. Copy and pasteDrop it into the negative prompt box in Automatic1111, ComfyUI, Forge or any SDXL app.

Questions

What is a negative prompt?
A negative prompt is a list of things you do NOT want in the image, like extra fingers, blurry, low quality, or watermark. Stable Diffusion and SDXL steer away from those words while they generate, so your final image comes out cleaner and closer to what you meant.
Does my data get sent anywhere?
No. Everything runs in your browser in plain JavaScript. Nothing is uploaded, there is no signup, and nothing is stored or logged. Once the page has loaded you can even use it offline.
Do I need every term at once?
No. Start with a preset, then add or remove terms to match the problem you actually see. Piling on too many negatives can flatten an image, so keep the ones that fix your issue and drop the rest.
Made by Lumenkiln Studio · 100% in your browser, nothing uploaded.

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