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Stable Diffusion web UI

A browser interface based on Gradio library for Stable Diffusion.

Original script with Gradio UI was written by a kind anonymopus user. This is a modification.

Installing and running

Stable Diffusion

This script assumes that you already have main Stable Diffusion sutff installed, assumed to be in directory /sd. If you don't have it installed, follow the guide:

This repository's webgui.py is a replacement for kdiff.py from the guide.

Particularly, following files must exist:

  • /sd/configs/stable-diffusion/v1-inference.yaml
  • /sd/models/ldm/stable-diffusion-v1/model.ckpt
  • /sd/ldm/util.py
  • /sd/k_diffusion/__init__.py

GFPGAN

If you want to use GFPGAN to improve generated faces, you need to install it separately. Follow instructions from https://github.com/TencentARC/GFPGAN, but when cloning it, do so into Stable Diffusion main directory, /sd. After that download GFPGANv1.3.pth and put it into the /sd/GFPGAN/experiments/pretrained_models directory. If you're getting troubles with GFPGAN support, follow instructions from the GFPGAN's repository until inference_gfpgan.py script works.

The following files must exist:

  • /sd/GFPGAN/inference_gfpgan.py
  • /sd/GFPGAN/experiments/pretrained_models/GFPGANv1.3.pth

If the GFPGAN directory does not exist, you will not get the option to use GFPGAN in the UI. If it does exist, you will either be able to use it, or there will be a message in console with an error related to GFPGAN.

Web UI

Run the script as:

python webui.py

When running the script, you must be in the main Stable Diffusion directory, /sd. If you cloned this repository into a subdirectory of /sd, say, the stable-diffusion-webui directory, you will run it as:

python stable-diffusion-webui/webui.py

When launching, you may get a very long warning message related to some weights not being used. You may freely ignore it. After a while, you will get a message like this:

Running on local URL:  http://127.0.0.1:7860/

Open the URL in browser, and you are good to go.

Features

The script creates a web UI for Stable Diffusion's txt2img and img2img scripts. Following are features added that are not in original script.

GFPGAN

Lets you improve faces in pictures using the GFPGAN model. There is a checkbox in every tab to use GFPGAN at 100%, and also a separate tab that just allows you to use GFPGAN on any picture, with a slider that controls how strongthe effect is.

Sampling method selection

Pick out of three sampling methods for txt2img: DDIM, PLMS, k-diffusion:

Prompt matrix

Separate multiple prompts using the | character, and the system will produce an image for every combination of them. For example, if you use a busy city street in a modern city|illustration|cinematic lighting prompt, there are four combinations possible (first part of prompt is always kept):

  • a busy city street in a modern city
  • a busy city street in a modern city, illustration
  • a busy city street in a modern city, cinematic lighting
  • a busy city street in a modern city, illustration, cinematic lighting

Four images will be produced, in this order, all with same seed and each with corresponding prompt:

Another example, this time with 5 prompts and 16 variations:

If you use this feature, batch count will be ignored, because the number of pictures to produce depends on your prompts, but batch size will still work (generating multiple pictures at the same time for a small speed boost).

Flagging

Click the Flag button under the output section, and generated images will be saved to log/images directory, and generation parameters will be appended to a csv file log/log.csv in the /sd directory.

Copy-paste generation parameters

A text output provides generation parameters in an easy to copy-paste form for easy sharing.

If you generate multiple pictures, the displayed seed will be the seed of the first one.

Correct seeds for batches

If you use a seed of 1000 to generate two batches of two images each, four generated images will have seeds: 1000, 1001, 1002, 1003. Previous versions of the UI would produce 1000, x, 1001, x, where x is an iamge that can't be generated by any seed.