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127 lines
6.1 KiB
Markdown
127 lines
6.1 KiB
Markdown
---
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sidebar_position: 3
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title: "Image Generation"
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---
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# Image Generation
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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.
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## AUTOMATIC1111
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Open WebUI supports image generation through the **AUTOMATIC1111** [API](https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/API). Here are the steps to get started:
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### Initial Setup
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1. Ensure that you have [AUTOMATIC1111](https://github.com/AUTOMATIC1111/stable-diffusion-webui) installed.
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2. Launch AUTOMATIC1111 with additional flags to enable API access:
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```
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./webui.sh --api --listen
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```
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3. For Docker installation of WebUI with the environment variables preset, use the following command:
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```
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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
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```
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### Configuring Open WebUI
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1. In Open WebUI, navigate to the **Admin Panel** > **Settings** > **Images** menu.
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2. Set the `Image Generation Engine` field to `Default (Automatic1111)`.
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3. In the API URL field, enter the address where AUTOMATIC1111's API is accessible:
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```
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http://<your_automatic1111_address>:7860/
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```
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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.
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## ComfyUI
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ComfyUI provides an alternative interface for managing and interacting with image generation models. Learn more or download it from its [GitHub page](https://github.com/comfyanonymous/ComfyUI). Below are the setup instructions to get ComfyUI running alongside your other tools.
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### Initial Setup
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1. Download and extract the ComfyUI software package from [GitHub](https://github.com/comfyanonymous/ComfyUI) to your desired directory.
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2. To start ComfyUI, run the following command:
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```
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python main.py
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```
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For systems with low VRAM, launch ComfyUI with additional flags to reduce memory usage:
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```
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python main.py --lowvram
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```
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3. For Docker installation of WebUI with the environment variables preset, use the following command:
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```
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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
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```
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### Configuring Open WebUI
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1. Navigate to the **Admin Panel** > **Settings** > **Images** menu in Open WebUI.
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2. Set the `Image Generation Engine` field to `ComfyUI`.
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3. In the API URL field, enter the address where ComfyUI's API is accessible:
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```
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http://<your_comfyui_address>:8188/
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```
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Set the environment variable `COMFYUI_BASE_URL` to this address to ensure proper integration.
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4. Verify the connection.
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5. Save changes.
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## Configuring for FLUX-Schnell & Flux-Dev models:
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To enable ComfyUI Flux mode, add the following environment variables to your Docker-compose.yml file for Open WebUI:
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```yaml
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COMFYUI_BASE_URL="http://host.docker.internal:8188"
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COMFYUI_CFG_SCALE="3.5"
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COMFYUI_SAMPLER="euler"
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COMFYUI_SCHEDULER="simple"
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COMFYUI_SD3="false"
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COMFYUI_FLUX="true" # Enables ComfyUI Flux mode.
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COMFYUI_FLUX_WEIGHT_DTYPE="fp8_e4m3fn" # Ignored if Flux is not enabled. Sets the weight precision for Flux.
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COMFYUI_FLUX_FP8_CLIP="true # Enable 8-bit precision for the Flux text encoder.
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```
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**Important Notes:**
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* Flux mode has a completely different workflow that is not compatible with other models. Make sure you understand the implications before enabling it.
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* A recent version of ComfyUI is required.
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* Specific model checkpoints and files must be present in your ComfyUI installation.
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### Model Checkpoints and Files
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The following files are required for Flux mode:
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* 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](https://huggingface.co/black-forest-labs).
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* `clip_l.safetensors` in the `models/clip` directory. Download from [here](https://huggingface.co/comfyanonymous/flux_text_encoders/tree/main).
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* `t5xxl_fp16.safetensors` in the `models/clip` directory, unless `COMFYUI_FLUX_FP8_CLIP` is enabled. Download from [here](https://huggingface.co/comfyanonymous/flux_text_encoders/tree/main).
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* `ae.sft` in the `models/vae` directory. Download from [here](https://huggingface.co/black-forest-labs/FLUX.1-schnell/blob/main/ae.safetensors).
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**Additional Requirements:**
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* 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](https://huggingface.co/comfyanonymous/flux_text_encoders/tree/main).
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## OpenAI DALL·E
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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.
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### Initial Setup
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1. Obtain an [API key](https://platform.openai.com/api-keys) from OpenAI.
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### Configuring Open WebUI
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1. In Open WebUI, navigate to the **Admin Panel** > **Settings** > **Images** menu.
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2. Set the `Image Generation Engine` field to `Open AI (Dall-E)`.
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3. Enter your OpenAI API key.
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4. Choose the DALL·E model you wish to use. Note that image size options will depend on the selected model:
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- **DALL·E 2**: Supports `256x256`, `512x512`, or `1024x1024` images.
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- **DALL·E 3**: Supports `1024x1024`, `1792x1024`, or `1024x1792` images.
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### Azure OpenAI
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Using Azure OpenAI Dall-E directly is unsupported, but you can [set up a LiteLLM proxy](https://litellm.vercel.app/docs/image_generation) which is compatible with the `Open AI (Dall-E)` Image Generation Engine.
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## Using Image Generation
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1. First, use a text generation model to write a prompt for image generation.
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2. After the response has finished, you can click the Picture icon to generate an image.
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