SD Token Weight Syntax Builder

Stable Diffusion token weight syntax builder

Emphasising the right words is how you get Stable Diffusion to actually paint what you asked for — but hand-typing ((nested)) brackets is error-prone and a single mismatched parenthesis can break the whole prompt. Paste your prompt, set an exact weight per token with a slider, and copy correct (token:weight) syntax with no typos.

How attention weighting works

Stable Diffusion converts your prompt into token embeddings and lets you scale the attention each token receives:

(token:1.3)   exactly 1.3× attention (emphasis)
(token)       ≈ 1.1× attention
[token]       ≈ 0.9× attention (de-emphasis)
((token))     ≈ 1.21× (nesting multiplies)

The legacy nested-bracket forms are equivalent to a single numeric weight, which is why this builder always emits the explicit (token:weight) form — it is the clearest and works identically across AUTOMATIC1111, Forge and ComfyUI. A weight of exactly 1.0 is left as plain text, since multiplying by one changes nothing.

Tips for clean weighting

• Stay between 0.8 and 1.4. This is the sweet spot for most checkpoints.
• Boost one thing at a time. Weighting everything to 1.3 is the same as weighting nothing.
• De-emphasise instead of deleting. If a concept keeps dominating, try 0.8–0.9 before removing it entirely.
• SDXL is gentler. It responds to smaller nudges, so start lower than you would on SD 1.5.