🎨 Zero-Training Inpainting - Works immediately with ANY SD model, even custom models you've trained yourself
🛠️ Simple Integration - Same workflow as standard ComfyUI KSampler
🚀 Quality Enhancements - High quality and seamless inpainting

Example Results

Each example includes:

Original masked image
Full ComfyUI workflow

Quickstart

Install ComfyUI.
Install ComfyUI-Manager
Look up this extension in ComfyUI-Manager. If you are installing manually, clone this repository under ComfyUI/custom_nodes.
Restart ComfyUI.

Installation

Place LanPaint_Nodes.py in your ComfyUI/custom_nodes folder
Restart ComfyUI
Use like regular KSampler with inpainting workflows

Usage

Workflow Setup
Same as default ComfyUI KSampler - simply replace with LanPaint KSampler nodes. The inpainting workflow is the same as the SetLatentNoiseMask inpainting workflow.

Note LanPaint only support binary mask (0,1) with no smoothing. Any mask with smooting will be converted to binary mask during inpainting.

Advanced Options (Optional)

Fine-tune results with these key parameters:

Parameter	Typical Range	Effect
`NumSteps`	1-10	Thinking iterations per step
`Lambda`	4-8	Content preservation strength
`StepSize`	0.05-0.2	Detail refinement intensity

Develop

To install the dev dependencies and pre-commit (will run the ruff hook), do:

cd LanPaint
pip install -e .[dev]
pre-commit install

The -e flag above will result in a "live" install, in the sense that any changes you make to your node extension will automatically be picked up the next time you run ComfyUI.

Publish to Github

Install Github Desktop or follow these instructions for ssh.

Create a Github repository that matches the directory name.
Push the files to Git

git add .
git commit -m "project scaffolding"
git push

Writing custom nodes

An example custom node is located in node.py. To learn more, read the docs.

Tests

This repo contains unit tests written in Pytest in the tests/ directory. It is recommended to unit test your custom node.

build-pipeline.yml will run pytest and linter on any open PRs
validate.yml will run node-diff to check for breaking changes

Publishing to Registry

If you wish to share this custom node with others in the community, you can publish it to the registry. We've already auto-populated some fields in pyproject.toml under tool.comfy, but please double-check that they are correct.

You need to make an account on https://registry.comfy.org and create an API key token.

Go to the registry. Login and create a publisher id (everything after the @ sign on your registry profile).
Add the publisher id into the pyproject.toml file.
Create an api key on the Registry for publishing from Github. Instructions.
Add it to your Github Repository Secrets as REGISTRY_ACCESS_TOKEN.

A Github action will run on every git push. You can also run the Github action manually. Full instructions here. Join our discord if you have any questions!

README.md

LanPaint

Features