Denoise Strength
Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).
Updated Oct 17, 2026 · 1 min read
- Term
- Denoise Strength
- In Short
- Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).
- Applies To
- ComfyUI SD 1.5, SDXL, Flux & Video
Definition: Denoise Strength
Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling).
Setting denoise below 1.0 preserves the structure of an encoded input image, making it the primary slider for img2img refinement, FaceDetailer passes, and Ultimate SD Upscale.
How to tune this in your ComfyUI workflow
Every parameter in ComfyUI is exposed directly on its node rather than hidden behind global settings tabs. You can inspect or override this behavior per pass in ComfyUI Studio.
New to node graphs? Grab the Windows installer at /download and open a built-in template from the workflow menu.
FAQs
What does Denoise Strength do in ComfyUI?
Determines how much noise is added and removed during sampling (1.00 for text-to-image, 0.30–0.65 for img2img and upscaling). Setting denoise below 1.0 preserves the structure of an encoded input image, making it the primary slider for img2img refinement, FaceDetailer passes, and Ultimate SD Upscale.
Where do I adjust this setting on the canvas?
Check the corresponding loader or KSampler widget in your active workflow graph.
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