> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-comfy-docs-comfyapi-search.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AdjustContrast - ComfyUI Built-in Node Documentation

> The Adjust Contrast node adjusts the contrast of an input image by scaling the difference between light and dark areas around the midpoint of the color range.

The Adjust Contrast node adjusts the contrast of an input image by scaling the difference between light and dark areas around the midpoint of the color range. A factor of 1.0 leaves the image unchanged, values below 1.0 reduce contrast, and values above 1.0 increase contrast.

## Inputs

| Parameter | Description                                                                                   | Data Type | Required | Range     |
| --------- | --------------------------------------------------------------------------------------------- | --------- | -------- | --------- |
| `image`   | The input image to have its contrast adjusted.                                                | IMAGE     | Yes      | -         |
| `factor`  | Contrast factor. 1.0 = no change, \<1.0 = less contrast, >1.0 = more contrast. (default: 1.0) | FLOAT     | No       | 0.0 - 2.0 |

## Outputs

| Output Name | Description                                                                                                                                                              | Data Type |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------- |
| `image`     | The resulting image with adjusted contrast. Pixel values are clamped to the 0.0–1.0 range. If the input image has an alpha channel, that channel is preserved unchanged. | IMAGE     |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/AdjustContrast/en.md)

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