> ## 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.

# WanImageToImageApi - ComfyUI Built-in Node Documentation

> Complete documentation for the WanImageToImageApi 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/WanImageToImageApi/en.md)

The Wan Image to Image node generates an image from one or two input images and a text prompt. It transforms your input images based on the description you provide, creating a new image that maintains the aspect ratio of your original input. The output image is fixed at 1.6 megapixels regardless of the input size.

## Inputs

| Parameter         | Data Type | Required | Range                | Description                                                                                          |
| ----------------- | --------- | -------- | -------------------- | ---------------------------------------------------------------------------------------------------- |
| `model`           | COMBO     | Yes      | "wan2.5-i2i-preview" | Model to use (default: "wan2.5-i2i-preview").                                                        |
| `image`           | IMAGE     | Yes      | -                    | Single-image editing or multi-image fusion, maximum 2 images.                                        |
| `prompt`          | STRING    | Yes      | -                    | Prompt used to describe the elements and visual features, supports English/Chinese (default: empty). |
| `negative_prompt` | STRING    | No       | -                    | Negative text prompt to guide what to avoid (default: empty).                                        |
| `seed`            | INT       | No       | 0 to 2147483647      | Seed to use for generation (default: 0).                                                             |
| `watermark`       | BOOLEAN   | No       | -                    | Whether to add an "AI generated" watermark to the result (default: true).                            |

**Note:** This node accepts exactly 1 or 2 input images. If you provide more than 2 images or no images at all, the node will return an error.

## Outputs

| Output Name | Data Type | Description                                                     |
| ----------- | --------- | --------------------------------------------------------------- |
| `image`     | IMAGE     | The generated image based on the input images and text prompts. |