> ## 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.

# FeatherMask - ComfyUI Built-in Node Documentation

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

The `FeatherMask` node applies a feathering effect to the edges of a given mask, smoothly transitioning the mask's edges by adjusting their opacity based on specified distances from each edge. This creates a softer, more blended edge effect.

## Inputs

| Parameter | Data Type | Description                                                                                                                           |
| --------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `mask`    | MASK      | The mask to which the feathering effect will be applied. It determines the area of the image that will be affected by the feathering. |
| `left`    | INT       | Specifies the distance from the left edge within which the feathering effect will be applied.                                         |
| `top`     | INT       | Specifies the distance from the top edge within which the feathering effect will be applied.                                          |
| `right`   | INT       | Specifies the distance from the right edge within which the feathering effect will be applied.                                        |
| `bottom`  | INT       | Specifies the distance from the bottom edge within which the feathering effect will be applied.                                       |

## Outputs

| Parameter | Data Type | Description                                                                                       |
| --------- | --------- | ------------------------------------------------------------------------------------------------- |
| `mask`    | MASK      | The output is a modified version of the input mask with a feathering effect applied to its edges. |