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

# Runway API Node Image Generation ComfyUI Official Example

> This article will introduce how to use Runway nodes in ComfyUI for text-to-image and reference-to-image generation

Runway is a company focused on generative AI, providing powerful image generation capabilities. Its models support features such as style transfer, image extension, and detail control. Currently, ComfyUI has integrated the Runway API, allowing you to directly use the related nodes in ComfyUI for image generation.

In this guide, we will walk you through the following workflows:

* Text-to-image
* Reference-to-image

<Tip>
  To use the API nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the [API Nodes Overview](/tutorials/api-nodes/overview) section of the documentation to understand the specific requirements for using the API nodes.
</Tip>

<Tip>
  If you find missing nodes when loading the workflow file below, it may be due to the following situations:

  1. You are not using the latest Development (Nightly) version of ComfyUI.
  2. You are using the Stable (Release) version or Desktop version of ComfyUI (which does not include the latest feature updates).
  3. You are using the latest Commit version of ComfyUI, but some nodes failed to import during startup.

  Please make sure you have successfully updated ComfyUI to the latest Development (Nightly) version. See: [How to Update ComfyUI](/installation/update_comfyui) section to learn how to update ComfyUI.
</Tip>

## Runway Image Text-to-Image Workflow

### 1. Workflow File Download

The image below contains workflow information in its `metadata`. Please download and drag it into ComfyUI to load the corresponding workflow.

![ComfyUI Runway Image Text to Image](https://raw.githubusercontent.com/Comfy-Org/example_workflows/refs/heads/main/api_nodes/runway/image/text_to_image.png)

### 2. Complete the Workflow Execution Step by Step

![ComfyUI Runway Image Text to Image Step Guide](https://mintlify.s3.us-west-1.amazonaws.com/dripart-train-lora-docs/images/tutorial/api_nodes/runway/runway_text_to_image_step_guide.jpg)

You can refer to the numbers in the image to complete the basic text-to-image workflow execution:

1. In the `Runway Text to Image` node, input your prompt in the `prompt` field
2. (Optional) Adjust the `ratio` setting to set different output aspect ratios
3. Click the `Run` button, or use the shortcut `Ctrl(cmd) + Enter` to execute image generation.
4. After waiting for the API to return results, you can view the generated image in the `Save Image` node (right-click to save). The corresponding image will also be saved to the `ComfyUI/output/` directory.

## Runway Image Reference-to-Image Workflow

### 1. Workflow and Input Image Download

The image below contains workflow information in its `metadata`. Please download and drag it into ComfyUI to load the corresponding workflow.

![ComfyUI Runway Image Reference to Image](https://raw.githubusercontent.com/Comfy-Org/example_workflows/refs/heads/main/api_nodes/runway/image/reference_to_image/runway_reference_to_image.png)

Download the image below for input

![ComfyUI Runway Image Reference to Image Input](https://raw.githubusercontent.com/Comfy-Org/example_workflows/refs/heads/main/api_nodes/runway/image/reference_to_image/input.png)

### 2. Complete the Workflow Execution Step by Step

![ComfyUI Runway Image Reference to Image Step Guide](https://mintlify.s3.us-west-1.amazonaws.com/dripart-train-lora-docs/images/tutorial/api_nodes/runway/runway_reference_to_image_step_guide.jpg)

You can refer to the numbers in the image to complete the basic reference-to-image workflow execution:

1. In the `Load Image` node, load the provided input image
2. In the `Runway Text to Image` node, input your prompt in the `prompt` field and adjust dimensions
3. Click the `Run` button, or use the shortcut `Ctrl(cmd) + Enter` to execute image generation.
4. After waiting for the API to return results, you can view the generated image in the `Save Image` node (right-click to save). The corresponding image will also be saved to the `ComfyUI/output/` directory.