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

# AdjustContrast - ComfyUI Built-in Node Documentation

> Complete documentation for the AdjustContrast node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> 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)

The Adjust Contrast node modifies the contrast level of an input image. It works by adjusting the difference between the light and dark areas of the image. A factor of 1.0 leaves the image unchanged, values below 1.0 reduce contrast, and values above 1.0 increase it.

## Inputs

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

## Outputs

| Output Name | Data Type | Description                                 |
| ----------- | --------- | ------------------------------------------- |
| `image`     | IMAGE     | The resulting image with adjusted contrast. |