ComfyUI-RGBYP-Mask-Editor

RGB + Yellow + Pink 5-color mask editor for ComfyUI

Overview

RGBYP Mask Editor is a custom JavaScript node that adds a full-featured color mask editor with 5 channels (RGB + Yellow + Pink).

The node saves its working files inside /ComfyUI/temp/, which allows masks to persist even after refreshing the browser page.
⚠️ All files inside /temp/ are automatically cleared when you restart ComfyUI.

The editor works on any image node (Load Image, Preview, etc.), but the package also includes special nodes that directly output RGBYP masks as separate images:

LoadImageWithFileData
RGBYPMaskBridge
RGBYPMaskToRegularMasks

RGBYP Mask Editor

The editor opens from the Right-Click menu on nodes containing images.
The menu entry appears near the top.

Keyboard Shortcuts

1 / 2 / 3 / 4 / 5 — switch color
SHIFT + A / D — brush size
SHIFT + W / S — mask opacity
SHIFT + Z / X — zoom
SHIFT + N — clear mask
SPACE (hold) — pan the image
ENTER — save mask & close
ESC — cancel & close

Mouse Controls

Left click — brush
Right click — eraser
Middle click — pan
Mouse wheel — zoom

Opacity Note

Changing opacity only affects the preview, including previews in nodes.
It does not affect the final mask file.
Default opacity is 75%.

Auto-Mask Tools (4 buttons)

Fill the mask horizontally:

Split in half
Split 1:2
Split 2:1
Split into thirds

LoadImageWithFileData

A standard image-loading node that also outputs the RGBYP mask (or a 64×64 black placeholder if no mask was drawn).

Additional outputs:

dir_path — directory path without filename
file_path — full path including filename
file_name — filename without extension
file_name_ext — filename with extension

RGBYPMaskBridge

Passes the input image through and allows drawing an RGBYP mask directly on it.
Outputs both the image and the mask.

RGBYPMaskToRegularMasks

Converts a single RGBYP mask image into five separate grayscale masks.
A minimalistic utility for quick splitting.

F.A.Q.

Can I draw masks on regular Load Image and other nodes?

Yes, but keep in mind:

They output the image with the mask baked in, not the mask itself.
Your mask edits will be lost if you refresh the browser.
(My nodes preserve masks because they store temp files.)

How do I keep my mask after a full ComfyUI restart?

The RGBYP mask is just an image.
Save the generated mask manually to your output folder and load it again in the next session.

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