> ## 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.

# ImageScaleBy - ComfyUI Built-in Node Documentation

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

The ImageScaleBy node is designed for upscaling images by a specified scale factor using various interpolation methods. It allows for the adjustment of the image size in a flexible manner, catering to different upscaling needs.

## Inputs

| Parameter        | Data Type      | Description                                                                                                                                         |
| ---------------- | -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
| `image`          | `IMAGE`        | The input image to be upscaled. This parameter is crucial as it provides the base image that will undergo the upscaling process.                    |
| `upscale_method` | COMBO\[STRING] | Specifies the interpolation method to be used for upscaling. The choice of method can affect the quality and characteristics of the upscaled image. |
| `scale_by`       | `FLOAT`        | The factor by which the image will be upscaled. This determines the increase in size of the output image relative to the input image.               |

## Outputs

| Parameter | Data Type | Description                                                                                                                |
| --------- | --------- | -------------------------------------------------------------------------------------------------------------------------- |
| `image`   | `IMAGE`   | The upscaled image, which is larger than the input image according to the specified scale factor and interpolation method. |