open-webui-docs/docs/tutorial/images.md

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3	Image Generation

Image Generation

Open WebUI supports image generation through three backends: AUTOMATIC1111, ComfyUI, and OpenAI DALL·E. This guide will help you set up and use either of these options.

AUTOMATIC1111

Open WebUI supports image generation through the AUTOMATIC1111 API. Here are the steps to get started:

Initial Setup

1. Ensure that you have AUTOMATIC1111 installed.
2. Launch AUTOMATIC1111 with additional flags to enable API access:

   ./webui.sh --api --listen
   

3. For Docker installation of WebUI with the environment variables preset, use the following command:

   docker run -d -p 3000:8080 --add-host=host.docker.internal:host-gateway -e AUTOMATIC1111_BASE_URL=http://host.docker.internal:7860/ -e ENABLE_IMAGE_GENERATION=True -v open-webui:/app/backend/data --name open-webui --restart always ghcr.io/open-webui/open-webui:main
   

Configuring Open WebUI

1. In Open WebUI, navigate to the Admin Panel > Settings > Images menu.
2. Set the Image Generation Engine field to Default (Automatic1111).
3. In the API URL field, enter the address where AUTOMATIC1111's API is accessible:

   http://<your_automatic1111_address>:7860/
   

   If you're running a Docker installation of Open WebUI and AUTOMATIC1111 on the same host, use http://host.docker.internal:7860/ as your address.

ComfyUI

ComfyUI provides an alternative interface for managing and interacting with image generation models. Learn more or download it from its GitHub page. Below are the setup instructions to get ComfyUI running alongside your other tools.

Initial Setup

1. Download and extract the ComfyUI software package from GitHub to your desired directory.
2. To start ComfyUI, run the following command:

   python main.py
   

   For systems with low VRAM, launch ComfyUI with additional flags to reduce memory usage:

   python main.py --lowvram
   

3. For Docker installation of WebUI with the environment variables preset, use the following command:

   docker run -d -p 3000:8080 --add-host=host.docker.internal:host-gateway -e COMFYUI_BASE_URL=http://host.docker.internal:7860/ -e ENABLE_IMAGE_GENERATION=True -v open-webui:/app/backend/data --name open-webui --restart always ghcr.io/open-webui/open-webui:main
   

Configuring Open WebUI

1. Navigate to the Admin Panel > Settings > Images menu in Open WebUI.
2. Set the Image Generation Engine field to ComfyUI.
3. In the API URL field, enter the address where ComfyUI's API is accessible:

   http://<your_comfyui_address>:8188/
   

   Set the environment variable COMFYUI_BASE_URL to this address to ensure proper integration.
4. Verify the connection.
5. Save changes.

Configuring for FLUX-Schnell & Flux-Dev models:

To enable ComfyUI Flux mode, add the following environment variables to your Docker-compose.yml file for Open WebUI:

COMFYUI_BASE_URL="http://host.docker.internal:8188"
COMFYUI_CFG_SCALE="3.5"
COMFYUI_SAMPLER="euler"
COMFYUI_SCHEDULER="simple"
COMFYUI_SD3="false"
COMFYUI_FLUX="true" # Enables ComfyUI Flux mode.
COMFYUI_FLUX_WEIGHT_DTYPE="fp8_e4m3fn" # Ignored if Flux is not enabled. Sets the weight precision for Flux.
COMFYUI_FLUX_FP8_CLIP="true # Enable 8-bit precision for the Flux text encoder.

Important Notes:

• Flux mode has a completely different workflow that is not compatible with other models. Make sure you understand the implications before enabling it.
• A recent version of ComfyUI is required.
• Specific model checkpoints and files must be present in your ComfyUI installation.

Model Checkpoints and Files

The following files are required for Flux mode:

• Model checkpoints (sft extension) in both models/checkpoints and models/unet directories. You can download the Flux variant from the black-forest-labs HuggingFace page.
• clip_l.safetensors in the models/clip directory. Download from here.
• t5xxl_fp16.safetensors in the models/clip directory, unless COMFYUI_FLUX_FP8_CLIP is enabled. Download from here.
• ae.sft in the models/vae directory. Download from here.

Additional Requirements:

• If COMFYUI_FLUX_FP8_CLIP is set to true, the t5xxl_fp8_e4m3fn.safetensors file must exist in the models/clip directory. Download from here.

OpenAI DALL·E

Open WebUI also supports image generation through the OpenAI DALL·E APIs. This option includes a selector for choosing between DALL·E 2 and DALL·E 3, each supporting different image sizes.

Initial Setup

1. Obtain an API key from OpenAI.

Configuring Open WebUI

1. In Open WebUI, navigate to the Admin Panel > Settings > Images menu.
2. Set the Image Generation Engine field to Open AI (Dall-E).
3. Enter your OpenAI API key.
4. Choose the DALL·E model you wish to use. Note that image size options will depend on the selected model:
   • DALL·E 2: Supports 256x256, 512x512, or 1024x1024 images.
   • DALL·E 3: Supports 1024x1024, 1792x1024, or 1024x1792 images.

Azure OpenAI

Using Azure OpenAI Dall-E directly is unsupported, but you can set up a LiteLLM proxy which is compatible with the Open AI (Dall-E) Image Generation Engine.

Using Image Generation

1. First, use a text generation model to write a prompt for image generation.
2. After the response has finished, you can click the Picture icon to generate an image.