miniPaint Bridge for ComfyUI

Features

• Context Menu Integration: Right-click any node with an image and select "🖼️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

• Right-click on a Load Image or similar node , select 🖼️miniPaint choose one of the following options:

Edit in miniPaint (New Window)

Opens the miniPaint editor in a separate browser window. Best for users who prefer a dedicated workspace with more screen space.

Edit in miniPaint (Pop-up)

• Opens the miniPaint editor as a pop-up within ComfyUI's interface.
• Ideal for quick edits without leaving the ComfyUI workflow.

Editing Workflow (Both Modes)

• Edit your image in the chosen editor tab.
• Click the blue "SAVE TO COMFY" button at the top of the editor.
• The file will appear in input/miniPaint/ and auto-load into your node.
• Close the tab when finished.

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

• Based on miniPaint
• Author of miniPaint ViliusL aka viliusle
• Some hint for menu from KJNodes
• Huge assistance from Google Gemini, DeepSeek, Qwen.