miniPaint Bridge for ComfyUI

A lightweight, local, open-source image editor integration for ComfyUI. Based on miniPaint v4.14.3.

Features

• Context Menu Integration: Right-click any node with an image and select "Edit in miniPaint".
• Bi-directional Sync: Edit images in your browser and save them directly back to the ComfyUI input/miniPaint folder.
• Auto-Update: After saving in the editor, the Load Image node in ComfyUI automatically updates to the new file.
• Smart Tabs: Uses a single browser tab for all editing sessions to prevent clutter.
• Fully Offline: No external servers involved, all processing is local.

Installation

1. Clone this repo into your ComfyUI/custom_nodes/ folder.
2. Restart ComfyUI.

Usage

1. Right-click on a Load Image or similar node.
2. Select "Edit in miniPaint".
3. Edit your image in the new tab.
4. Click the blue "SAVE TO COMFY" button at the top.
5. The file will appear in input/miniPaint/ and auto-load into your node.

Important Notes

• Same Browser Only: The "Edit" and "Save" functions only work if the editor is opened in the same browser where ComfyUI is running. If you copy the editor URL to a different browser, the link between them will be lost.
• Single Tab: The extension is designed to use a single browser tab for editing. If you have multiple editor tabs open manually, only the one linked to the current session will receive images.

Credits

• Author of miniPaint ViliusL aka viliusle.
• Huge assistance from Google Gemini.